CVE-2026-41168Medium· 5.3▾ Sunlitpypdf has long runtimes for wrong size values in cross-reference and object streams
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.2 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 1.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
0.3%
Last analysed / modified upstream
0.3% → 0.5%
An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with wrong large /Size values or object streams with wrong large /N values.
This has been fixed in pypdf==6.10.1.
If you cannot upgrade yet, consider applying the changes from PR #3733.
pypdf < 6.10.1Upgrade to a patched release:
pypdf 6.10.1Connected by shared product, vendor, weakness, or advisory.
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