{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42589","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-29T00:31:15.724Z","datePublished":"2026-05-14T15:11:30.619Z","dateUpdated":"2026-05-14T18:59:21.125Z"},"containers":{"cna":{"title":"Gotenberg: Unauthenticated RCE via ExifTool Metadata Key Injection","problemTypes":[{"descriptions":[{"cweId":"CWE-78","lang":"en","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/gotenberg/gotenberg/security/advisories/GHSA-rqgh-gxv4-6657","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gotenberg/gotenberg/security/advisories/GHSA-rqgh-gxv4-6657"}],"affected":[{"vendor":"gotenberg","product":"gotenberg","versions":[{"version":"< 8.31.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-14T15:11:30.619Z"},"descriptions":[{"lang":"en","value":"Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, Gotenberg's /forms/pdfengines/metadata/write HTTP endpoint accepts a JSON metadata object and passes its keys directly to ExifTool via the go-exiftool library. No validation is performed on key characters. A \\n embedded in a JSON key splits the ExifTool stdin stream into a new argument line, allowing an attacker to inject arbitrary ExifTool flags — including -if, which evaluates Perl expressions. This achieves unauthenticated OS command execution in a single HTTP request. The response is HTTP 200 with a valid PDF, making the attack transparent to basic monitoring. This vulnerability is fixed in 8.31.0."}],"source":{"advisory":"GHSA-rqgh-gxv4-6657","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/gotenberg/gotenberg/security/advisories/GHSA-rqgh-gxv4-6657","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-14T18:58:43.735611Z","id":"CVE-2026-42589","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-14T18:59:21.125Z"}}]}}