{"id":"CVE-2025-62708","aliases":["GHSA-jfx9-29x2-rv3j","PYSEC-2026-1831"],"title":"pypdf can exhaust RAM via manipulated LZWDecode streams","summary":"pypdf can exhaust RAM via manipulated LZWDecode streams","severity":"medium","vendor":"pypdf","product":"pypdf","ecosystem":"pip","affected":["pypdf < 6.1.3"],"patched":["pypdf 6.1.3"],"published":"2025-10-22","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:50:29.885611595Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-jfx9-29x2-rv3j","references":[{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-jfx9-29x2-rv3j"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-62708"},{"url":"https://github.com/py-pdf/pypdf/pull/3502"},{"url":"https://github.com/py-pdf/pypdf/commit/e51d07807ffcdaf18077b9486dadb3dc05b368da"},{"url":"https://github.com/py-pdf/pypdf"},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.1.3"}],"tags":["osv","pip"],"epss":0.00444,"epssPercentile":0.38032,"ingestedAt":"2026-07-08T18:25:50.664Z","slug":"CVE-2025-62708","body":"## Overview\n\n### Impact\n\nAn attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream of a page using the LZWDecode filter.\n\n### Patches\nThis has been fixed in [pypdf==6.1.3](https://github.com/py-pdf/pypdf/releases/tag/6.1.3).\n\n### Workarounds\nIf you cannot upgrade yet, consider applying the changes from PR [#3502](https://github.com/py-pdf/pypdf/pull/3502).\n\n## Affected packages\n\n- `pypdf < 6.1.3`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `pypdf 6.1.3`","depth":"sunlit","depthScore":28,"depthScoreParts":{"impact":27.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}