{"id":"CVE-2026-40260","state":"PUBLISHED","title":"pypdf: Manipulated XMP metadata entity declarations can exhaust RAM","description":"pypdf is a free and open-source pure-python PDF library. In versions prior to 6.10.0, manipulated XMP metadata entity declarations can exhaust RAM. An attacker who exploits this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the XMP metadata. This issue has been fixed in version 6.10.0.","publishedAt":"2026-04-16T23:18:26.687Z","updatedAt":"2026-04-17T18:42:05.059Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["py-pdf pypdf"],"affected":[{"vendor":"py-pdf","product":"pypdf","versions":[{"version":"< 6.10.0","status":"affected"}]}],"references":["https://github.com/py-pdf/pypdf/security/advisories/GHSA-3crg-w4f6-42mx","https://github.com/py-pdf/pypdf/pull/3724","https://github.com/py-pdf/pypdf/commit/b15a374e5ca648d4878e57c3b2c0551e7f8cc7f8","https://github.com/py-pdf/pypdf/releases/tag/6.10.0"],"weaknesses":["CWE-776"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40260.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40260","state":"PUBLISHED","datePublished":"2026-04-16T23:18:26.687Z","dateUpdated":"2026-04-17T18:42:05.059Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-10T17:31:45.787Z"},"containers":{"cna":{"title":"pypdf: Manipulated XMP metadata entity declarations can exhaust RAM","descriptions":[{"lang":"en","value":"pypdf is a free and open-source pure-python PDF library. In versions prior to 6.10.0, manipulated XMP metadata entity declarations can exhaust RAM. An attacker who exploits this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the XMP metadata. This issue has been fixed in version 6.10.0."}],"affected":[{"vendor":"py-pdf","product":"pypdf","versions":[{"version":"< 6.10.0","status":"affected"}]}],"references":[{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-3crg-w4f6-42mx","name":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-3crg-w4f6-42mx","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/py-pdf/pypdf/pull/3724","name":"https://github.com/py-pdf/pypdf/pull/3724","tags":["x_refsource_MISC"]},{"url":"https://github.com/py-pdf/pypdf/commit/b15a374e5ca648d4878e57c3b2c0551e7f8cc7f8","name":"https://github.com/py-pdf/pypdf/commit/b15a374e5ca648d4878e57c3b2c0551e7f8cc7f8","tags":["x_refsource_MISC"]},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.10.0","name":"https://github.com/py-pdf/pypdf/releases/tag/6.10.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-776","lang":"en","description":"CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-16T23:18:26.687Z"},"source":{"advisory":"GHSA-3crg-w4f6-42mx","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-17T18:41:50.866889Z","id":"CVE-2026-40260","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-17T18:42:05.059Z"}}]}}}