{"items":[{"id":"NVI-00014201","kind":"vulnerability","title":"Fulgur: Non-painting replaced elements amplify to thousands of blank PDF pages (denial of service)","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-4rf6-qx84-q9fv","CVE-2026-68537"],"plain_summary":"GitHub lists this reviewed advisory for fulgur. 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-2cd85ae99583dc7951e8a6d189646dd8"],"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":"2026-09-17T18:49:16.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-597bfd0b72af3836ddc67ee81c7d5b26"},{"kind":"CVSS","as_of":"2026-09-24T21:25:27.050Z","value":"7.5 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-39c383a87b79e3f4578b2e8c8b129416"},{"kind":"EPSS","as_of":"2026-11-02T12:00:30.000Z","value":"0.609%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.49161. Missing scores are unknown.","source_id":"sr-2cd85ae99583dc7951e8a6d189646dd8"}],"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-597bfd0b72af3836ddc67ee81c7d5b26","url":"https://github.com/advisories/GHSA-4rf6-qx84-q9fv","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-4rf6-qx84-q9fv","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:49.409Z"},{"id":"sr-39c383a87b79e3f4578b2e8c8b129416","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68537","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-68537","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T15:07:54.921Z"},{"id":"sr-2cd85ae99583dc7951e8a6d189646dd8","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-2026-68537","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:15:58.861Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-597bfd0b72af3836ddc67ee81c7d5b26"],"technology":"fulgur","known_exclusions":[],"conditions_summary":"`fulgur` converts untrusted HTML/CSS into PDF, commonly on a server that\nprocesses input supplied by many tenants. In versions prior to 0.26.0, a\nchildless box that resolves to a pathologically tall height was amplified into\nthousands of blank PDF pages, even when it produces no visible output.\n\nThe childless-collapse defense that would normally collapse such a box was gated\nby a tag-only \"replaced content\" check, so any **non-painting replaced element**\nbypassed it, including:\n\n- an unresolved `src` (the common offline-first case),\n- a `visibility:hidden` image,\n- an undecodable image format, and\n- an empty ``.\n\nA trailing-sibling variant of the same gap was also open. A few bytes of HTML\ntherefore amplified into roughly `MAX_PAGES` (10,000) blank pages; the renderer\nallocates and runs a per-page loop over them, producing CPU and memory\nexhaustion. An attacker able to submit HTML to a fulgur-based conversion service\ncan trigger this with a trivially small payload, denying service to the host and\nany co-tenants.\n\n## Patches\n\nFixed in **0.26.0** (PR #575). The tag-only gate was removed so that any\npathologically tall childless box collapses regardless of whether it is a\nreplace","public_affected_ranges":["< 0.26.0"]}],"null_published_at":"2026-11-08T19:53:44.049Z","source_updated_at":"2026-09-17T18:49:16.000Z","source_disclosed_at":"2026-09-17T18:49:15.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-01T14:29:49.409Z"},{"id":"NVI-00014201","kind":"vulnerability","title":"Fulgur: Non-painting replaced elements amplify to thousands of blank PDF pages (denial of service)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4rf6-qx84-q9fv","CVE-2026-68537"],"plain_summary":"GitHub lists this reviewed advisory for fulgur. 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-597bfd0b72af3836ddc67ee81c7d5b26"],"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":"2026-09-17T18:49:16.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-597bfd0b72af3836ddc67ee81c7d5b26"}],"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-597bfd0b72af3836ddc67ee81c7d5b26","url":"https://github.com/advisories/GHSA-4rf6-qx84-q9fv","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-4rf6-qx84-q9fv","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:49.409Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-597bfd0b72af3836ddc67ee81c7d5b26"],"technology":"fulgur","known_exclusions":[],"conditions_summary":"`fulgur` converts untrusted HTML/CSS into PDF, commonly on a server that\nprocesses input supplied by many tenants. In versions prior to 0.26.0, a\nchildless box that resolves to a pathologically tall height was amplified into\nthousands of blank PDF pages, even when it produces no visible output.\n\nThe childless-collapse defense that would normally collapse such a box was gated\nby a tag-only \"replaced content\" check, so any **non-painting replaced element**\nbypassed it, including:\n\n- an unresolved `src` (the common offline-first case),\n- a `visibility:hidden` image,\n- an undecodable image format, and\n- an empty ``.\n\nA trailing-sibling variant of the same gap was also open. A few bytes of HTML\ntherefore amplified into roughly `MAX_PAGES` (10,000) blank pages; the renderer\nallocates and runs a per-page loop over them, producing CPU and memory\nexhaustion. An attacker able to submit HTML to a fulgur-based conversion service\ncan trigger this with a trivially small payload, denying service to the host and\nany co-tenants.\n\n## Patches\n\nFixed in **0.26.0** (PR #575). The tag-only gate was removed so that any\npathologically tall childless box collapses regardless of whether it is a\nreplace","public_affected_ranges":["< 0.26.0"]}],"null_published_at":"2026-11-02T10:00:37.224Z","source_updated_at":"2026-09-17T18:49:16.000Z","source_disclosed_at":"2026-09-17T18:49:15.000Z","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":"2026-11-01T14:29:49.409Z"}],"next_cursor":null,"snapshot_revision":"42594"}