CVE-2026-113786Low· 2.3▾ Sunlitpypdf: Unvalidated JPEG image data loading
▾ Sunlit zone — Low / medium · no exploitation signal
impact 12.6 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 23.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
0.4%
An attacker who uses this vulnerability can craft a PDF which leads to arbitrary image parsers being called. This requires loading an image which claims to use the /DCTDecode filter (JPEG data).
Users which do not have the optional Pillow dependency installed in their environment are not affected.
This has been fixed in pypdf==6.21.1.
If you cannot upgrade yet, consider applying the changes from PR #4222.
pypdf < 6.21.1Upgrade to a patched release:
pypdf 6.21.1Connected by shared product, vendor, weakness, or advisory.
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