{"id":"CVE-2026-119207","state":"PUBLISHED","title":"pypdf: Possible large memory usage for exceptions in strict mode","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory when strict mode loads a crafted invalid PDF dictionary. Nested parsing failures add repeated exception text to newly raised errors, allowing a small malformed dictionary to amplify into very large error messages. This issue is fixed in version 6.21.3.","publishedAt":"2026-10-29T20:38:54.611Z","updatedAt":"2026-10-30T17:12:40.743Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["py-pdf pypdf"],"affected":[{"vendor":"py-pdf","product":"pypdf","versions":[{"version":"< 6.21.3","status":"affected"}]}],"references":["https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vqv-7265-gm2w","https://github.com/py-pdf/pypdf/pull/4265","https://github.com/py-pdf/pypdf/commit/64270258c0eced720f7960aecf8cef31afd39f8d","https://github.com/py-pdf/pypdf/releases/tag/6.21.3"],"weaknesses":["CWE-400","CWE-405"],"ingestedAt":"2026-10-30T17:18:06.571Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/119xxx/CVE-2026-119207.json","commit":"caca5991c38b96213066f41f1d69f02d92b92db0","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-119207","state":"PUBLISHED","datePublished":"2026-10-29T20:38:54.611Z","dateUpdated":"2026-10-30T17:12:40.743Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-29T16:04:48.729Z"},"containers":{"cna":{"title":"pypdf: Possible large memory usage for exceptions in strict mode","descriptions":[{"lang":"en","value":"pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory when strict mode loads a crafted invalid PDF dictionary. Nested parsing failures add repeated exception text to newly raised errors, allowing a small malformed dictionary to amplify into very large error messages. This issue is fixed in version 6.21.3."}],"affected":[{"vendor":"py-pdf","product":"pypdf","versions":[{"version":"< 6.21.3","status":"affected"}]}],"references":[{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vqv-7265-gm2w","name":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vqv-7265-gm2w","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/py-pdf/pypdf/pull/4265","name":"https://github.com/py-pdf/pypdf/pull/4265","tags":["x_refsource_MISC"]},{"url":"https://github.com/py-pdf/pypdf/commit/64270258c0eced720f7960aecf8cef31afd39f8d","name":"https://github.com/py-pdf/pypdf/commit/64270258c0eced720f7960aecf8cef31afd39f8d","tags":["x_refsource_MISC"]},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.21.3","name":"https://github.com/py-pdf/pypdf/releases/tag/6.21.3","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-405","lang":"en","description":"CWE-405: Asymmetric Resource Consumption (Amplification)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-29T20:38:54.611Z"},"source":{"advisory":"GHSA-4vqv-7265-gm2w","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-30T17:12:29.821934Z","id":"CVE-2026-119207","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":"2026-10-30T17:12:40.743Z"}}]}}}