{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-91814", "assignerOrgId": "14984358-7092-470d-8f34-ade47a7658a2", "state": "PUBLISHED", "assignerShortName": "Foxit", "dateReserved": "2026-09-15T07:34:45.816Z", "datePublished": "2026-09-23T07:49:25.079Z", "dateUpdated": "2026-09-23T14:24:20.763Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "14984358-7092-470d-8f34-ade47a7658a2", "shortName": "Foxit", "dateUpdated": "2026-09-23T07:49:25.079Z" }, "title": "Security vulnerability: Foxit PDF Editor/Reader Fails to Detect Modifications to Signed Documents Displaying Newly Added Content", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-347", "description": "CWE-347 Improper Verification of Cryptographic Signature", "type": "CWE" } ] } ], "impacts": [ { "descriptions": [ { "lang": "en", "value": "Content Spoofing" } ] } ], "affected": [ { "vendor": "Foxit Software Inc.", "product": "Foxit PDF Editor", "platforms": [ "Windows", "MacOS" ], "versions": [ { "status": "affected", "version": "Versions 2026.2 and earlier" }, { "status": "affected", "version": "Versions 14.0.7 and earlier" }, { "status": "affected", "version": "Versions 13.2.6 and earlier" } ], "defaultStatus": "unaffected" }, { "vendor": "Foxit Software Inc.", "product": "Foxit PDF Reader", "platforms": [ "Windows", "MacOS" ], "versions": [ { "status": "affected", "version": "Versions 2026.2 and earlier" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "lang": "en", "value": "A signature validation vulnerability exists in Foxit PDF Editor/Reader’s handling of incrementally updated PDF documents. Changes to visible document content may not invalidate the existing signature, allowing attackers to alter signed content and potentially carry out content spoofing while the document continues to appear validly signed.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "A signature validation vulnerability exists in Foxit PDF Editor/Reader’s handling of incrementally updated PDF documents. Changes to visible document content may not invalidate the existing signature, allowing attackers to alter signed content and potentially carry out content spoofing while the document continues to appear validly signed." } ] } ], "references": [ { "url": "https://www.foxit.com/support/security-bulletins.html" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV3_1": { "version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 5.3, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N" } } ], "credits": [ { "lang": "en", "value": "Jan Slabon (Setasign GmbH & Co. KG), Germany", "type": "finder" } ], "x_generator": { "engine": "Vulnogram 1.0.5" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-23T14:24:09.232400Z", "id": "CVE-2026-91814", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-23T14:24:20.763Z" } } ] } }