{"items":[{"id":"NVI-00008973","kind":"vulnerability","title":"Happy DOM: SSRF via iframe and link stylesheet when parsing untrusted HTML","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-c8p4-j97h-3vg8","CVE-2026-118660"],"plain_summary":"GitHub lists this reviewed advisory for happy-dom. 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-170059df2e8503f237d1473d0adcf5c1"],"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},{"summary":"The original advisory lists fixed boundaries 21.0.0 for happy-dom. Confirm the publisher’s latest guidance.","source_ids":["sr-60412ae11638d6f9b3c20d42141cd0f0"],"action_type":"vendor_patch","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":"2026-10-28T21:06:43.000Z","value":"8.6 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-538e7647f9b92fb29346b1523d0fe943"},{"kind":"CVSS","as_of":"2026-10-29T18:17:27.943Z","value":"8.6 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-170059df2e8503f237d1473d0adcf5c1"}],"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-538e7647f9b92fb29346b1523d0fe943","url":"https://github.com/advisories/GHSA-c8p4-j97h-3vg8","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-c8p4-j97h-3vg8","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:56:08.420Z"},{"id":"sr-60412ae11638d6f9b3c20d42141cd0f0","url":"https://github.com/advisories/GHSA-c8p4-j97h-3vg8","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-c8p4-j97h-3vg8","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-11-01T14:29:42.930Z"},{"id":"sr-170059df2e8503f237d1473d0adcf5c1","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118660","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-118660","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T09:59:16.598Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-538e7647f9b92fb29346b1523d0fe943"],"technology":"happy-dom","known_exclusions":[],"conditions_summary":"## Summary\nhappy-dom v20.8.9 makes real server-side HTTP requests to arbitrary URLs when parsing HTML containing `` or `` elements. This behavior is enabled by default (`disableIframePageLoading: false`, `disableCSSFileLoading: false`). When an application uses happy-dom to parse untrusted HTML on the server side, an attacker can trigger Server-Side Request Forgery by embedding these elements.\n\n## Affected Versions\n- happy-dom ` stylesheets fetch their `href` URL via real HTTP requests\n\nWhen untrusted HTML is parsed, these elements trigger real server-side HTTP requests to whatever URLs are specified. No special configuration or opt-in is needed.\n\n## Proof of Concept\n\n### Verified test (attacker server receives requests):\n```javascript\nconst http = require('http');\nconst { Window } = require('happy-dom');\n\n// Start attacker server\nconst srv = http.createServer((req, res) => {\n    console.log(`SSRF HIT: ${req.method} ${req.url}`);\n    res.writeHead(200","public_affected_ranges":["<= 20.14.6"]},{"certainty":"source_listed","source_ids":["sr-60412ae11638d6f9b3c20d42141cd0f0"],"technology":"happy-dom","known_exclusions":[],"conditions_summary":"## Summary\nhappy-dom v20.8.9 makes real server-side HTTP requests to arbitrary URLs when parsing HTML containing `` or `` elements. This behavior is enabled by default (`disableIframePageLoading: false`, `disableCSSFileLoading: false`). When an application uses happy-dom to parse untrusted HTML on the server side, an attacker can trigger Server-Side Request Forgery by embedding these elements.\n\n## Affected Versions\n- happy-dom ` stylesheets fetch their `href` URL via real HTTP requests\n\nWhen untrusted HTML is parsed, these elements trigger real server-side HTTP requests to whatever URLs are specified. No special configuration or opt-in is needed.\n\n## Proof of Concept\n\n### Verified test (attacker server receives requests):\n```javascript\nconst http = require('http');\nconst { Window } = require('happy-dom');\n\n// Start attacker server\nconst srv = http.createServer((req, res) => {\n    console.log(`SSRF HIT: ${req.method} ${req.url}`);\n    res.writeHead(200","public_affected_ranges":["SEMVER: introduced 0; fixed 21.0.0"]}],"null_published_at":"2026-11-03T10:03:31.373Z","source_updated_at":"2026-10-28T21:06:43.000Z","source_disclosed_at":"2026-10-28T21:06:42.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:56:08.420Z"},{"id":"NVI-00008973","kind":"vulnerability","title":"Happy DOM: SSRF via iframe and link stylesheet when parsing untrusted HTML","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-c8p4-j97h-3vg8","CVE-2026-118660"],"plain_summary":"GitHub lists this reviewed advisory for happy-dom. 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-538e7647f9b92fb29346b1523d0fe943"],"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},{"summary":"The original advisory lists fixed boundaries 21.0.0 for happy-dom. Confirm the publisher’s latest guidance.","source_ids":["sr-60412ae11638d6f9b3c20d42141cd0f0"],"action_type":"vendor_patch","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":"2026-10-28T21:06:43.000Z","value":"8.6 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-538e7647f9b92fb29346b1523d0fe943"}],"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-538e7647f9b92fb29346b1523d0fe943","url":"https://github.com/advisories/GHSA-c8p4-j97h-3vg8","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-c8p4-j97h-3vg8","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:56:08.420Z"},{"id":"sr-60412ae11638d6f9b3c20d42141cd0f0","url":"https://github.com/advisories/GHSA-c8p4-j97h-3vg8","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-c8p4-j97h-3vg8","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-11-01T14:29:42.930Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-538e7647f9b92fb29346b1523d0fe943"],"technology":"happy-dom","known_exclusions":[],"conditions_summary":"## Summary\nhappy-dom v20.8.9 makes real server-side HTTP requests to arbitrary URLs when parsing HTML containing `` or `` elements. This behavior is enabled by default (`disableIframePageLoading: false`, `disableCSSFileLoading: false`). When an application uses happy-dom to parse untrusted HTML on the server side, an attacker can trigger Server-Side Request Forgery by embedding these elements.\n\n## Affected Versions\n- happy-dom ` stylesheets fetch their `href` URL via real HTTP requests\n\nWhen untrusted HTML is parsed, these elements trigger real server-side HTTP requests to whatever URLs are specified. No special configuration or opt-in is needed.\n\n## Proof of Concept\n\n### Verified test (attacker server receives requests):\n```javascript\nconst http = require('http');\nconst { Window } = require('happy-dom');\n\n// Start attacker server\nconst srv = http.createServer((req, res) => {\n    console.log(`SSRF HIT: ${req.method} ${req.url}`);\n    res.writeHead(200","public_affected_ranges":["<= 20.14.6"]},{"certainty":"source_listed","source_ids":["sr-60412ae11638d6f9b3c20d42141cd0f0"],"technology":"happy-dom","known_exclusions":[],"conditions_summary":"## Summary\nhappy-dom v20.8.9 makes real server-side HTTP requests to arbitrary URLs when parsing HTML containing `` or `` elements. This behavior is enabled by default (`disableIframePageLoading: false`, `disableCSSFileLoading: false`). When an application uses happy-dom to parse untrusted HTML on the server side, an attacker can trigger Server-Side Request Forgery by embedding these elements.\n\n## Affected Versions\n- happy-dom ` stylesheets fetch their `href` URL via real HTTP requests\n\nWhen untrusted HTML is parsed, these elements trigger real server-side HTTP requests to whatever URLs are specified. No special configuration or opt-in is needed.\n\n## Proof of Concept\n\n### Verified test (attacker server receives requests):\n```javascript\nconst http = require('http');\nconst { Window } = require('happy-dom');\n\n// Start attacker server\nconst srv = http.createServer((req, res) => {\n    console.log(`SSRF HIT: ${req.method} ${req.url}`);\n    res.writeHead(200","public_affected_ranges":["SEMVER: introduced 0; fixed 21.0.0"]}],"null_published_at":"2026-11-01T14:34:14.084Z","source_updated_at":"2026-10-28T21:06:43.000Z","source_disclosed_at":"2026-10-28T21:06:42.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:56:08.420Z"},{"id":"NVI-00008973","kind":"vulnerability","title":"Happy DOM: SSRF via iframe and link stylesheet when parsing untrusted HTML","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-c8p4-j97h-3vg8","CVE-2026-118660"],"plain_summary":"GitHub lists this reviewed advisory for happy-dom. 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-538e7647f9b92fb29346b1523d0fe943"],"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":"2026-10-28T21:06:43.000Z","value":"8.6 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-538e7647f9b92fb29346b1523d0fe943"}],"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-538e7647f9b92fb29346b1523d0fe943","url":"https://github.com/advisories/GHSA-c8p4-j97h-3vg8","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-c8p4-j97h-3vg8","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:56:08.420Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-538e7647f9b92fb29346b1523d0fe943"],"technology":"happy-dom","known_exclusions":[],"conditions_summary":"## Summary\nhappy-dom v20.8.9 makes real server-side HTTP requests to arbitrary URLs when parsing HTML containing `` or `` elements. This behavior is enabled by default (`disableIframePageLoading: false`, `disableCSSFileLoading: false`). When an application uses happy-dom to parse untrusted HTML on the server side, an attacker can trigger Server-Side Request Forgery by embedding these elements.\n\n## Affected Versions\n- happy-dom ` stylesheets fetch their `href` URL via real HTTP requests\n\nWhen untrusted HTML is parsed, these elements trigger real server-side HTTP requests to whatever URLs are specified. No special configuration or opt-in is needed.\n\n## Proof of Concept\n\n### Verified test (attacker server receives requests):\n```javascript\nconst http = require('http');\nconst { Window } = require('happy-dom');\n\n// Start attacker server\nconst srv = http.createServer((req, res) => {\n    console.log(`SSRF HIT: ${req.method} ${req.url}`);\n    res.writeHead(200","public_affected_ranges":["<= 20.14.6"]}],"null_published_at":"2026-10-31T22:13:27.125Z","source_updated_at":"2026-10-28T21:06:43.000Z","source_disclosed_at":"2026-10-28T21:06:42.000Z","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":"2026-10-31T21:56:08.420Z"}],"next_cursor":null,"snapshot_revision":"42594"}