{"items":[{"id":"NVI-00011767","kind":"vulnerability","title":"markdown-it: Quadratic complexity in smartquotes with unmatched closing quotes","revision":5,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r7fv-28h4-cvq7","CVE-2026-111759"],"plain_summary":"GitHub lists this reviewed advisory for markdown-it, markdown-it. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1ace7730c785a69ec8270eb4b8260485"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-20T14:34:52.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1fa9cee0b7247e690e4e12c82e42aaba"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"0.591%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.48287. Missing scores are unknown.","source_id":"sr-1ace7730c785a69ec8270eb4b8260485"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-1fa9cee0b7247e690e4e12c82e42aaba","url":"https://github.com/advisories/GHSA-r7fv-28h4-cvq7","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r7fv-28h4-cvq7","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:39.183Z"},{"id":"sr-1ace7730c785a69ec8270eb4b8260485","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-111759","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.775Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1fa9cee0b7247e690e4e12c82e42aaba"],"technology":"markdown-it","known_exclusions":[],"conditions_summary":"### Impact\n\nWhen `typographer: true` is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially leading to denial of service in applications processing untrusted input.\n\nMany opening double quotes followed by unmatched closing single quotes cause repeated scans of the entire opener stack. The same issue occurs with the quote types reversed.\n\nThe default configuration (`typographer: false`) is not affected, but this option is enabled with high probability.\n\n### Reproduction\n\n```js\nimport MarkdownIt from 'markdown-it'\nimport { performance } from 'node:perf_hooks'\n\nconst md = new MarkdownIt({ typographer: true })\n\nfor (const k of [2000, 4000, 8000, 16000, 32000]) {\n  const input = '\"a '.repeat(k) + \"b' \".repeat(k)\n  const start = performance.now()\n  md.render(input)\n  console.log(input.length, (performance.now() - start).toFixed(1), 'ms')\n}\n```\n\nResult:\n\n|input size|time|\n|-|-|\n|12000|18ms|\n|24000|47ms|\n|48000|115ms|\n|96000|428ms|\n|192000|1586ms|\n\n### Patches\n\nFixed in **15.0.2** and **14.3.2**.\n\n### Workarounds\n\nDisable typography with `typographer: false`, or disable only the smartquotes rule:\n\n```js\nmd.disable('smartquotes')\n```","public_affected_ranges":[">= 15.0.0, < 15.0.2"]},{"certainty":"source_listed","source_ids":["sr-1fa9cee0b7247e690e4e12c82e42aaba"],"technology":"markdown-it","known_exclusions":[],"conditions_summary":"### Impact\n\nWhen `typographer: true` is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially leading to denial of service in applications processing untrusted input.\n\nMany opening double quotes followed by unmatched closing single quotes cause repeated scans of the entire opener stack. The same issue occurs with the quote types reversed.\n\nThe default configuration (`typographer: false`) is not affected, but this option is enabled with high probability.\n\n### Reproduction\n\n```js\nimport MarkdownIt from 'markdown-it'\nimport { performance } from 'node:perf_hooks'\n\nconst md = new MarkdownIt({ typographer: true })\n\nfor (const k of [2000, 4000, 8000, 16000, 32000]) {\n  const input = '\"a '.repeat(k) + \"b' \".repeat(k)\n  const start = performance.now()\n  md.render(input)\n  console.log(input.length, (performance.now() - start).toFixed(1), 'ms')\n}\n```\n\nResult:\n\n|input size|time|\n|-|-|\n|12000|18ms|\n|24000|47ms|\n|48000|115ms|\n|96000|428ms|\n|192000|1586ms|\n\n### Patches\n\nFixed in **15.0.2** and **14.3.2**.\n\n### Workarounds\n\nDisable typography with `typographer: false`, or disable only the smartquotes rule:\n\n```js\nmd.disable('smartquotes')\n```","public_affected_ranges":["< 14.3.2"]}],"null_published_at":"2026-11-07T14:01:55.393Z","source_updated_at":"2026-10-20T14:34:52.000Z","source_disclosed_at":"2026-10-20T14:34:50.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T23:13:39.183Z"},{"id":"NVI-00011767","kind":"vulnerability","title":"markdown-it: Quadratic complexity in smartquotes with unmatched closing quotes","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r7fv-28h4-cvq7","CVE-2026-111759"],"plain_summary":"GitHub lists this reviewed advisory for markdown-it, markdown-it. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-18e63d99c78bda85b7226136cce93714"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-20T14:34:52.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1fa9cee0b7247e690e4e12c82e42aaba"},{"kind":"EPSS","as_of":"2026-11-02T12:00:30.000Z","value":"0.591%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.48237. Missing scores are unknown.","source_id":"sr-18e63d99c78bda85b7226136cce93714"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-1fa9cee0b7247e690e4e12c82e42aaba","url":"https://github.com/advisories/GHSA-r7fv-28h4-cvq7","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r7fv-28h4-cvq7","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:39.183Z"},{"id":"sr-18e63d99c78bda85b7226136cce93714","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-111759","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:15:58.840Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1fa9cee0b7247e690e4e12c82e42aaba"],"technology":"markdown-it","known_exclusions":[],"conditions_summary":"### Impact\n\nWhen `typographer: true` is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially leading to denial of service in applications processing untrusted input.\n\nMany opening double quotes followed by unmatched closing single quotes cause repeated scans of the entire opener stack. The same issue occurs with the quote types reversed.\n\nThe default configuration (`typographer: false`) is not affected, but this option is enabled with high probability.\n\n### Reproduction\n\n```js\nimport MarkdownIt from 'markdown-it'\nimport { performance } from 'node:perf_hooks'\n\nconst md = new MarkdownIt({ typographer: true })\n\nfor (const k of [2000, 4000, 8000, 16000, 32000]) {\n  const input = '\"a '.repeat(k) + \"b' \".repeat(k)\n  const start = performance.now()\n  md.render(input)\n  console.log(input.length, (performance.now() - start).toFixed(1), 'ms')\n}\n```\n\nResult:\n\n|input size|time|\n|-|-|\n|12000|18ms|\n|24000|47ms|\n|48000|115ms|\n|96000|428ms|\n|192000|1586ms|\n\n### Patches\n\nFixed in **15.0.2** and **14.3.2**.\n\n### Workarounds\n\nDisable typography with `typographer: false`, or disable only the smartquotes rule:\n\n```js\nmd.disable('smartquotes')\n```","public_affected_ranges":[">= 15.0.0, < 15.0.2"]},{"certainty":"source_listed","source_ids":["sr-1fa9cee0b7247e690e4e12c82e42aaba"],"technology":"markdown-it","known_exclusions":[],"conditions_summary":"### Impact\n\nWhen `typographer: true` is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially leading to denial of service in applications processing untrusted input.\n\nMany opening double quotes followed by unmatched closing single quotes cause repeated scans of the entire opener stack. The same issue occurs with the quote types reversed.\n\nThe default configuration (`typographer: false`) is not affected, but this option is enabled with high probability.\n\n### Reproduction\n\n```js\nimport MarkdownIt from 'markdown-it'\nimport { performance } from 'node:perf_hooks'\n\nconst md = new MarkdownIt({ typographer: true })\n\nfor (const k of [2000, 4000, 8000, 16000, 32000]) {\n  const input = '\"a '.repeat(k) + \"b' \".repeat(k)\n  const start = performance.now()\n  md.render(input)\n  console.log(input.length, (performance.now() - start).toFixed(1), 'ms')\n}\n```\n\nResult:\n\n|input size|time|\n|-|-|\n|12000|18ms|\n|24000|47ms|\n|48000|115ms|\n|96000|428ms|\n|192000|1586ms|\n\n### Patches\n\nFixed in **15.0.2** and **14.3.2**.\n\n### Workarounds\n\nDisable typography with `typographer: false`, or disable only the smartquotes rule:\n\n```js\nmd.disable('smartquotes')\n```","public_affected_ranges":["< 14.3.2"]}],"null_published_at":"2026-11-06T00:30:00.627Z","source_updated_at":"2026-10-20T14:34:52.000Z","source_disclosed_at":"2026-10-20T14:34:50.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T23:13:39.183Z"},{"id":"NVI-00011767","kind":"vulnerability","title":"markdown-it: Quadratic complexity in smartquotes with unmatched closing quotes","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r7fv-28h4-cvq7","CVE-2026-111759"],"plain_summary":"GitHub lists this reviewed advisory for markdown-it, markdown-it. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-0644b0648412968cac5a1b3deb771e06"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-20T14:34:52.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1fa9cee0b7247e690e4e12c82e42aaba"},{"kind":"EPSS","as_of":"2026-11-01T12:00:16.000Z","value":"0.591%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.48249. Missing scores are unknown.","source_id":"sr-0644b0648412968cac5a1b3deb771e06"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-1fa9cee0b7247e690e4e12c82e42aaba","url":"https://github.com/advisories/GHSA-r7fv-28h4-cvq7","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r7fv-28h4-cvq7","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:39.183Z"},{"id":"sr-0644b0648412968cac5a1b3deb771e06","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-111759","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.265Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1fa9cee0b7247e690e4e12c82e42aaba"],"technology":"markdown-it","known_exclusions":[],"conditions_summary":"### Impact\n\nWhen `typographer: true` is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially leading to denial of service in applications processing untrusted input.\n\nMany opening double quotes followed by unmatched closing single quotes cause repeated scans of the entire opener stack. The same issue occurs with the quote types reversed.\n\nThe default configuration (`typographer: false`) is not affected, but this option is enabled with high probability.\n\n### Reproduction\n\n```js\nimport MarkdownIt from 'markdown-it'\nimport { performance } from 'node:perf_hooks'\n\nconst md = new MarkdownIt({ typographer: true })\n\nfor (const k of [2000, 4000, 8000, 16000, 32000]) {\n  const input = '\"a '.repeat(k) + \"b' \".repeat(k)\n  const start = performance.now()\n  md.render(input)\n  console.log(input.length, (performance.now() - start).toFixed(1), 'ms')\n}\n```\n\nResult:\n\n|input size|time|\n|-|-|\n|12000|18ms|\n|24000|47ms|\n|48000|115ms|\n|96000|428ms|\n|192000|1586ms|\n\n### Patches\n\nFixed in **15.0.2** and **14.3.2**.\n\n### Workarounds\n\nDisable typography with `typographer: false`, or disable only the smartquotes rule:\n\n```js\nmd.disable('smartquotes')\n```","public_affected_ranges":[">= 15.0.0, < 15.0.2"]},{"certainty":"source_listed","source_ids":["sr-1fa9cee0b7247e690e4e12c82e42aaba"],"technology":"markdown-it","known_exclusions":[],"conditions_summary":"### Impact\n\nWhen `typographer: true` is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially leading to denial of service in applications processing untrusted input.\n\nMany opening double quotes followed by unmatched closing single quotes cause repeated scans of the entire opener stack. The same issue occurs with the quote types reversed.\n\nThe default configuration (`typographer: false`) is not affected, but this option is enabled with high probability.\n\n### Reproduction\n\n```js\nimport MarkdownIt from 'markdown-it'\nimport { performance } from 'node:perf_hooks'\n\nconst md = new MarkdownIt({ typographer: true })\n\nfor (const k of [2000, 4000, 8000, 16000, 32000]) {\n  const input = '\"a '.repeat(k) + \"b' \".repeat(k)\n  const start = performance.now()\n  md.render(input)\n  console.log(input.length, (performance.now() - start).toFixed(1), 'ms')\n}\n```\n\nResult:\n\n|input size|time|\n|-|-|\n|12000|18ms|\n|24000|47ms|\n|48000|115ms|\n|96000|428ms|\n|192000|1586ms|\n\n### Patches\n\nFixed in **15.0.2** and **14.3.2**.\n\n### Workarounds\n\nDisable typography with `typographer: false`, or disable only the smartquotes rule:\n\n```js\nmd.disable('smartquotes')\n```","public_affected_ranges":["< 14.3.2"]}],"null_published_at":"2026-11-02T20:21:07.818Z","source_updated_at":"2026-10-20T14:34:52.000Z","source_disclosed_at":"2026-10-20T14:34:50.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T23:13:39.183Z"},{"id":"NVI-00011767","kind":"vulnerability","title":"markdown-it: Quadratic complexity in smartquotes with unmatched closing quotes","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r7fv-28h4-cvq7","CVE-2026-111759"],"plain_summary":"GitHub lists this reviewed advisory for markdown-it, markdown-it. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-48138825aed7cc8980f1b79493053c18"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-20T14:34:52.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1fa9cee0b7247e690e4e12c82e42aaba"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.591%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.48256. Missing scores are unknown.","source_id":"sr-48138825aed7cc8980f1b79493053c18"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-1fa9cee0b7247e690e4e12c82e42aaba","url":"https://github.com/advisories/GHSA-r7fv-28h4-cvq7","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r7fv-28h4-cvq7","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:39.183Z"},{"id":"sr-48138825aed7cc8980f1b79493053c18","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-111759","publisher":"FIRST EPSS","observed_at":"2026-11-01T01:39:43.066Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1fa9cee0b7247e690e4e12c82e42aaba"],"technology":"markdown-it","known_exclusions":[],"conditions_summary":"### Impact\n\nWhen `typographer: true` is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially leading to denial of service in applications processing untrusted input.\n\nMany opening double quotes followed by unmatched closing single quotes cause repeated scans of the entire opener stack. The same issue occurs with the quote types reversed.\n\nThe default configuration (`typographer: false`) is not affected, but this option is enabled with high probability.\n\n### Reproduction\n\n```js\nimport MarkdownIt from 'markdown-it'\nimport { performance } from 'node:perf_hooks'\n\nconst md = new MarkdownIt({ typographer: true })\n\nfor (const k of [2000, 4000, 8000, 16000, 32000]) {\n  const input = '\"a '.repeat(k) + \"b' \".repeat(k)\n  const start = performance.now()\n  md.render(input)\n  console.log(input.length, (performance.now() - start).toFixed(1), 'ms')\n}\n```\n\nResult:\n\n|input size|time|\n|-|-|\n|12000|18ms|\n|24000|47ms|\n|48000|115ms|\n|96000|428ms|\n|192000|1586ms|\n\n### Patches\n\nFixed in **15.0.2** and **14.3.2**.\n\n### Workarounds\n\nDisable typography with `typographer: false`, or disable only the smartquotes rule:\n\n```js\nmd.disable('smartquotes')\n```","public_affected_ranges":[">= 15.0.0, < 15.0.2"]},{"certainty":"source_listed","source_ids":["sr-1fa9cee0b7247e690e4e12c82e42aaba"],"technology":"markdown-it","known_exclusions":[],"conditions_summary":"### Impact\n\nWhen `typographer: true` is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially leading to denial of service in applications processing untrusted input.\n\nMany opening double quotes followed by unmatched closing single quotes cause repeated scans of the entire opener stack. The same issue occurs with the quote types reversed.\n\nThe default configuration (`typographer: false`) is not affected, but this option is enabled with high probability.\n\n### Reproduction\n\n```js\nimport MarkdownIt from 'markdown-it'\nimport { performance } from 'node:perf_hooks'\n\nconst md = new MarkdownIt({ typographer: true })\n\nfor (const k of [2000, 4000, 8000, 16000, 32000]) {\n  const input = '\"a '.repeat(k) + \"b' \".repeat(k)\n  const start = performance.now()\n  md.render(input)\n  console.log(input.length, (performance.now() - start).toFixed(1), 'ms')\n}\n```\n\nResult:\n\n|input size|time|\n|-|-|\n|12000|18ms|\n|24000|47ms|\n|48000|115ms|\n|96000|428ms|\n|192000|1586ms|\n\n### Patches\n\nFixed in **15.0.2** and **14.3.2**.\n\n### Workarounds\n\nDisable typography with `typographer: false`, or disable only the smartquotes rule:\n\n```js\nmd.disable('smartquotes')\n```","public_affected_ranges":["< 14.3.2"]}],"null_published_at":"2026-11-01T22:58:19.124Z","source_updated_at":"2026-10-20T14:34:52.000Z","source_disclosed_at":"2026-10-20T14:34:50.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T23:13:39.183Z"},{"id":"NVI-00011767","kind":"vulnerability","title":"markdown-it: Quadratic complexity in smartquotes with unmatched closing quotes","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r7fv-28h4-cvq7","CVE-2026-111759"],"plain_summary":"GitHub lists this reviewed advisory for markdown-it, markdown-it. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1fa9cee0b7247e690e4e12c82e42aaba"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-20T14:34:52.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1fa9cee0b7247e690e4e12c82e42aaba"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-1fa9cee0b7247e690e4e12c82e42aaba","url":"https://github.com/advisories/GHSA-r7fv-28h4-cvq7","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r7fv-28h4-cvq7","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:39.183Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1fa9cee0b7247e690e4e12c82e42aaba"],"technology":"markdown-it","known_exclusions":[],"conditions_summary":"### Impact\n\nWhen `typographer: true` is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially leading to denial of service in applications processing untrusted input.\n\nMany opening double quotes followed by unmatched closing single quotes cause repeated scans of the entire opener stack. The same issue occurs with the quote types reversed.\n\nThe default configuration (`typographer: false`) is not affected, but this option is enabled with high probability.\n\n### Reproduction\n\n```js\nimport MarkdownIt from 'markdown-it'\nimport { performance } from 'node:perf_hooks'\n\nconst md = new MarkdownIt({ typographer: true })\n\nfor (const k of [2000, 4000, 8000, 16000, 32000]) {\n  const input = '\"a '.repeat(k) + \"b' \".repeat(k)\n  const start = performance.now()\n  md.render(input)\n  console.log(input.length, (performance.now() - start).toFixed(1), 'ms')\n}\n```\n\nResult:\n\n|input size|time|\n|-|-|\n|12000|18ms|\n|24000|47ms|\n|48000|115ms|\n|96000|428ms|\n|192000|1586ms|\n\n### Patches\n\nFixed in **15.0.2** and **14.3.2**.\n\n### Workarounds\n\nDisable typography with `typographer: false`, or disable only the smartquotes rule:\n\n```js\nmd.disable('smartquotes')\n```","public_affected_ranges":[">= 15.0.0, < 15.0.2"]},{"certainty":"source_listed","source_ids":["sr-1fa9cee0b7247e690e4e12c82e42aaba"],"technology":"markdown-it","known_exclusions":[],"conditions_summary":"### Impact\n\nWhen `typographer: true` is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially leading to denial of service in applications processing untrusted input.\n\nMany opening double quotes followed by unmatched closing single quotes cause repeated scans of the entire opener stack. The same issue occurs with the quote types reversed.\n\nThe default configuration (`typographer: false`) is not affected, but this option is enabled with high probability.\n\n### Reproduction\n\n```js\nimport MarkdownIt from 'markdown-it'\nimport { performance } from 'node:perf_hooks'\n\nconst md = new MarkdownIt({ typographer: true })\n\nfor (const k of [2000, 4000, 8000, 16000, 32000]) {\n  const input = '\"a '.repeat(k) + \"b' \".repeat(k)\n  const start = performance.now()\n  md.render(input)\n  console.log(input.length, (performance.now() - start).toFixed(1), 'ms')\n}\n```\n\nResult:\n\n|input size|time|\n|-|-|\n|12000|18ms|\n|24000|47ms|\n|48000|115ms|\n|96000|428ms|\n|192000|1586ms|\n\n### Patches\n\nFixed in **15.0.2** and **14.3.2**.\n\n### Workarounds\n\nDisable typography with `typographer: false`, or disable only the smartquotes rule:\n\n```js\nmd.disable('smartquotes')\n```","public_affected_ranges":["< 14.3.2"]}],"null_published_at":"2026-11-01T01:03:56.602Z","source_updated_at":"2026-10-20T14:34:52.000Z","source_disclosed_at":"2026-10-20T14:34:50.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T23:13:39.183Z"}],"next_cursor":null,"snapshot_revision":"42594"}