{"id":"CVE-2026-119207","aliases":["GHSA-4vqv-7265-gm2w"],"title":"pypdf has possible large memory usage for exceptions in strict mode","summary":"pypdf has possible large memory usage for exceptions in strict mode","severity":"high","vendor":"pypdf","product":"pypdf","ecosystem":"pip","affected":["pypdf < 6.21.3"],"patched":["pypdf 6.21.3"],"published":"2026-10-30","updated":"2026-10-30","sourceUpdated":"2026-10-30T23:15:07.229853114Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-4vqv-7265-gm2w","references":[{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vqv-7265-gm2w"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119207"},{"url":"https://github.com/py-pdf/pypdf/pull/4265"},{"url":"https://github.com/py-pdf/pypdf/commit/64270258c0eced720f7960aecf8cef31afd39f8d"},{"url":"https://github.com/py-pdf/pypdf"},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.21.3"},{"url":"https://github.com/advisories/GHSA-4vqv-7265-gm2w"}],"tags":["osv","pip","ghsa"],"epss":0.00304,"epssPercentile":0.2319,"cwe":["CWE-400","CWE-405"],"ingestedAt":"2026-10-30T23:11:25.769Z","slug":"CVE-2026-119207","body":"## Overview\n\n### Impact\n\nAn attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires loading an invalid dictionary.\n\n### Patches\n\nThis has been fixed in [pypdf==6.21.3](https://github.com/py-pdf/pypdf/releases/tag/6.21.3).\n\n### Workarounds\n\nIf you cannot upgrade yet, consider applying the changes from PR [#4265](https://github.com/py-pdf/pypdf/pull/4265).\n\n## Affected packages\n\n- `pypdf < 6.21.3`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `pypdf 6.21.3`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}