CVE-2026-41313Medium· 6.5▾ Sunlitpypdf: Possible long runtimes for wrong size values in incremental mode
▾ Sunlit zone — Low / medium · no exploitation signal
impact 35.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 13.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
0.2%
Last analysed / modified upstream
An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires loading a PDF with a large trailer /Size value in incremental mode.
This has been fixed in pypdf==6.10.2.
If you cannot upgrade yet, consider applying the changes from PR #3735.
pypdf < 6.10.2Upgrade to a patched release:
pypdf 6.10.2Connected by shared product, vendor, weakness, or advisory.
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