{"items":[{"id":"NVI-00011951","kind":"vulnerability","title":"WeasyPrint: EPS images reach the Ghostscript interpreter resulting in RCE","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r543-q48m-4c9j","CVE-2026-106443"],"plain_summary":"GitHub lists this reviewed advisory for WeasyPrint. 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-212bacab15c3d68806e3d5b5ff3f7447"],"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":"2026-10-07T18:05:51.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-6b0768f79e7b3f5bcc8dd9083f6a4073"},{"kind":"EPSS","as_of":"2026-11-01T12:00:16.000Z","value":"0.915%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.60145. Missing scores are unknown.","source_id":"sr-212bacab15c3d68806e3d5b5ff3f7447"}],"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-6b0768f79e7b3f5bcc8dd9083f6a4073","url":"https://github.com/advisories/GHSA-r543-q48m-4c9j","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r543-q48m-4c9j","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T00:58:46.232Z"},{"id":"sr-212bacab15c3d68806e3d5b5ff3f7447","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-2026-106443","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.263Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6b0768f79e7b3f5bcc8dd9083f6a4073"],"technology":"WeasyPrint","known_exclusions":[],"conditions_summary":"### Summary\n\nThis was found during a pentest, funded by the NLNnet foundation, conducted by Stefan Vink from Radically Open Security and the only High issue found. \n\nWeasyPrint passes fetched image bytes directly to Pillow's generic format dispatcher without restricting the input format. When Ghostscript is installed on the host, Pillow's EpsImagePlugin invokes it to rasterize attacker-controlled EPS/PS input. Any content that can supply an image to WeasyPrint (an  URL, CSS image value, SVG image reference, or data URI) can therefore drive untrusted PostScript into an external interpreter. On hosts running a Ghostscript version with a known -dSAFER bypass, this yields remote code execution.\n\n### Details\n\nThe image pipeline reads an external response and hands the raw bytes to Pillow's format-agnostic Image.open, with no allowlist of safe raster formats:\n\nwith fetch(url_fetcher, url) as response:\n    bytestring = response.read()\n    mime_type = forced_mime_type or response.content_type\n\n...\n\npillow_image = Image.open(BytesIO(bytestring))\n\nPillow selects the handler from the byte signature. For EPS/PS input it selects PIL.EpsImagePlugin, which invokes Ghostscript to rasterize th","public_affected_ranges":["<= 69.0"]}],"null_published_at":"2026-11-04T18:04:03.153Z","source_updated_at":"2026-10-07T18:05:51.000Z","source_disclosed_at":"2026-10-07T18:05:49.000Z","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":"2026-11-01T00:58:46.232Z"},{"id":"NVI-00011951","kind":"vulnerability","title":"WeasyPrint: EPS images reach the Ghostscript interpreter resulting in RCE","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r543-q48m-4c9j","CVE-2026-106443"],"plain_summary":"GitHub lists this reviewed advisory for WeasyPrint. 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-126dcc8979f58dfc211eb438da2aefd8"],"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":"2026-10-07T18:05:51.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-6b0768f79e7b3f5bcc8dd9083f6a4073"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.915%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.60143. Missing scores are unknown.","source_id":"sr-126dcc8979f58dfc211eb438da2aefd8"}],"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-6b0768f79e7b3f5bcc8dd9083f6a4073","url":"https://github.com/advisories/GHSA-r543-q48m-4c9j","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r543-q48m-4c9j","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T00:58:46.232Z"},{"id":"sr-126dcc8979f58dfc211eb438da2aefd8","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-2026-106443","publisher":"FIRST EPSS","observed_at":"2026-11-01T01:39:43.064Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6b0768f79e7b3f5bcc8dd9083f6a4073"],"technology":"WeasyPrint","known_exclusions":[],"conditions_summary":"### Summary\n\nThis was found during a pentest, funded by the NLNnet foundation, conducted by Stefan Vink from Radically Open Security and the only High issue found. \n\nWeasyPrint passes fetched image bytes directly to Pillow's generic format dispatcher without restricting the input format. When Ghostscript is installed on the host, Pillow's EpsImagePlugin invokes it to rasterize attacker-controlled EPS/PS input. Any content that can supply an image to WeasyPrint (an  URL, CSS image value, SVG image reference, or data URI) can therefore drive untrusted PostScript into an external interpreter. On hosts running a Ghostscript version with a known -dSAFER bypass, this yields remote code execution.\n\n### Details\n\nThe image pipeline reads an external response and hands the raw bytes to Pillow's format-agnostic Image.open, with no allowlist of safe raster formats:\n\nwith fetch(url_fetcher, url) as response:\n    bytestring = response.read()\n    mime_type = forced_mime_type or response.content_type\n\n...\n\npillow_image = Image.open(BytesIO(bytestring))\n\nPillow selects the handler from the byte signature. For EPS/PS input it selects PIL.EpsImagePlugin, which invokes Ghostscript to rasterize th","public_affected_ranges":["<= 69.0"]}],"null_published_at":"2026-11-01T14:34:14.098Z","source_updated_at":"2026-10-07T18:05:51.000Z","source_disclosed_at":"2026-10-07T18:05:49.000Z","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":"2026-11-01T00:58:46.232Z"},{"id":"NVI-00011951","kind":"vulnerability","title":"WeasyPrint: EPS images reach the Ghostscript interpreter resulting in RCE","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r543-q48m-4c9j","CVE-2026-106443"],"plain_summary":"GitHub lists this reviewed advisory for WeasyPrint. 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-6b0768f79e7b3f5bcc8dd9083f6a4073"],"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":"2026-10-07T18:05:51.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-6b0768f79e7b3f5bcc8dd9083f6a4073"}],"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-6b0768f79e7b3f5bcc8dd9083f6a4073","url":"https://github.com/advisories/GHSA-r543-q48m-4c9j","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r543-q48m-4c9j","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T00:58:46.232Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6b0768f79e7b3f5bcc8dd9083f6a4073"],"technology":"WeasyPrint","known_exclusions":[],"conditions_summary":"### Summary\n\nThis was found during a pentest, funded by the NLNnet foundation, conducted by Stefan Vink from Radically Open Security and the only High issue found. \n\nWeasyPrint passes fetched image bytes directly to Pillow's generic format dispatcher without restricting the input format. When Ghostscript is installed on the host, Pillow's EpsImagePlugin invokes it to rasterize attacker-controlled EPS/PS input. Any content that can supply an image to WeasyPrint (an  URL, CSS image value, SVG image reference, or data URI) can therefore drive untrusted PostScript into an external interpreter. On hosts running a Ghostscript version with a known -dSAFER bypass, this yields remote code execution.\n\n### Details\n\nThe image pipeline reads an external response and hands the raw bytes to Pillow's format-agnostic Image.open, with no allowlist of safe raster formats:\n\nwith fetch(url_fetcher, url) as response:\n    bytestring = response.read()\n    mime_type = forced_mime_type or response.content_type\n\n...\n\npillow_image = Image.open(BytesIO(bytestring))\n\nPillow selects the handler from the byte signature. For EPS/PS input it selects PIL.EpsImagePlugin, which invokes Ghostscript to rasterize th","public_affected_ranges":["<= 69.0"]}],"null_published_at":"2026-11-01T01:03:56.617Z","source_updated_at":"2026-10-07T18:05:51.000Z","source_disclosed_at":"2026-10-07T18:05:49.000Z","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":"2026-11-01T00:58:46.232Z"}],"next_cursor":null,"snapshot_revision":"42594"}