CVE-2026-48155Medium▾ Sunlitpypdf: Possible large memory usage for large offsets for layout mode text
▾ Sunlit zone — Low / medium · no exploitation signal
impact 27.5 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 7.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
0.1%
Last analysed / modified upstream
An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets.
This has been fixed in pypdf==6.12.0.
If developers are unable to immediately upgrade, they should consider applying the changes from PR #3790.
pypdf < 6.12.0Upgrade to a patched release:
pypdf 6.12.0Connected by shared product, vendor, weakness, or advisory.
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