{"id":"CVE-2026-34626","state":"PUBLISHED","title":"Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)","description":"Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could result in arbitrary file system read in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.","publishedAt":"2026-04-14T16:18:04.679Z","updatedAt":"2026-08-27T22:15:50.791Z","severity":{"score":6.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","source":"adobe"},"assigner":"adobe","products":["Adobe Acrobat DC","Adobe Acrobat Reader DC","Adobe Acrobat 2024"],"affected":[{"vendor":"Adobe","product":"Acrobat DC","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"26.001.21411","versionType":"custom"},{"version":"26.001.21431","status":"unaffected","versionType":"custom"}]},{"vendor":"Adobe","product":"Acrobat Reader DC","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"26.001.21411","versionType":"custom"},{"version":"26.001.21431","status":"unaffected","versionType":"custom"}]},{"vendor":"Adobe","product":"Acrobat 2024","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"24.001.30362 (Win), 24.001.30360 (Mac)","versionType":"custom"},{"version":"24.001.30365","status":"unaffected","versionType":"custom"}]}],"references":["https://helpx.adobe.com/security/products/acrobat/apsb26-44.html"],"weaknesses":["CWE-1321"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/34xxx/CVE-2026-34626.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-34626","state":"PUBLISHED","datePublished":"2026-04-14T16:18:04.679Z","dateUpdated":"2026-08-27T22:15:50.791Z","assignerShortName":"adobe","assignerOrgId":"078d4453-3bcd-4900-85e6-15281da43538","dateReserved":"2026-03-30T17:30:36.490Z"},"containers":{"cna":{"title":"Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)","descriptions":[{"lang":"en","value":"Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could result in arbitrary file system read in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file."}],"affected":[{"vendor":"Adobe","product":"Acrobat DC","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"26.001.21411","versionType":"custom"},{"version":"26.001.21431","status":"unaffected","versionType":"custom"}]},{"vendor":"Adobe","product":"Acrobat Reader DC","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"26.001.21411","versionType":"custom"},{"version":"26.001.21431","status":"unaffected","versionType":"custom"}]},{"vendor":"Adobe","product":"Acrobat 2024","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"24.001.30362 (Win), 24.001.30360 (Mac)","versionType":"custom"},{"version":"24.001.30365","status":"unaffected","versionType":"custom"}]}],"references":[{"url":"https://helpx.adobe.com/security/products/acrobat/apsb26-44.html","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","availabilityRequirement":"NOT_DEFINED","baseScore":6.3,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","confidentialityRequirement":"NOT_DEFINED","environmentalScore":6.3,"environmentalSeverity":"MEDIUM","exploitCodeMaturity":"NOT_DEFINED","integrityImpact":"NONE","integrityRequirement":"NOT_DEFINED","modifiedAttackComplexity":"LOW","modifiedAttackVector":"LOCAL","modifiedAvailabilityImpact":"NONE","modifiedConfidentialityImpact":"HIGH","modifiedIntegrityImpact":"NONE","modifiedPrivilegesRequired":"NONE","modifiedScope":"CHANGED","modifiedUserInteraction":"REQUIRED","privilegesRequired":"NONE","remediationLevel":"NOT_DEFINED","reportConfidence":"NOT_DEFINED","scope":"CHANGED","temporalScore":6.3,"temporalSeverity":"MEDIUM","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1321","description":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"adobe","orgId":"078d4453-3bcd-4900-85e6-15281da43538","dateUpdated":"2026-08-27T22:15:50.791Z"},"datePublic":"2026-04-14T17:00:00.000Z","source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-14T17:52:58.091952Z","id":"CVE-2026-34626","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-14T17:53:05.039Z"}}]}}}