{"id":"CVE-2026-59935","aliases":["GHSA-g867-7843-wf8q","PYSEC-2026-3613"],"title":"pypdf: Possible infinite loop for not terminated inline images (ASCII85 and ASCIIHex filter)","summary":"pypdf: Possible infinite loop for not terminated inline images (ASCII85 and ASCIIHex filter)","severity":"high","vendor":"pypdf","product":"pypdf","ecosystem":"pip","affected":["pypdf < 6.14.2"],"patched":["pypdf 6.14.2"],"published":"2026-07-23","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:50:51.957724392Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-g867-7843-wf8q","references":[{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-g867-7843-wf8q"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59935"},{"url":"https://github.com/py-pdf/pypdf/pull/3892"},{"url":"https://github.com/py-pdf/pypdf/commit/5a33a46416aa1ae6c025ff90a3cca57631fdafd2"},{"url":"https://github.com/py-pdf/pypdf"},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.14.2"},{"url":"https://github.com/advisories/GHSA-g867-7843-wf8q"}],"tags":["osv","pip","ghsa"],"epss":0.0062,"epssPercentile":0.48333,"cwe":["CWE-835"],"ingestedAt":"2026-07-23T17:18:58.493Z","slug":"CVE-2026-59935","body":"## Overview\n\n### Impact\n\nAn attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires parsing the content stream of a page with a not terminated inline image, as done when extracting the page text for example. It only affects the ASCII85 and ASCIIHex filters.\n\n### Patches\n\nThis has been fixed in [pypdf==6.14.2](https://github.com/py-pdf/pypdf/releases/tag/6.14.2).\n\n### Workarounds\n\nIf you cannot upgrade yet, consider applying the changes from PR [#3892](https://github.com/py-pdf/pypdf/pull/3892).\n\n## Affected packages\n\n- `pypdf < 6.14.2`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `pypdf 6.14.2`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}