GHSA-5hx5-vpf9-5wcvLow
pypdf: Unvalidated JPEG image data loading
🔗 CVE IDs covered (1)
📋 Description
Impact
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.
Patches
This has been fixed in pypdf==6.21.1.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #4222.
🎯 Affected products1
- pip/pypdf:< 6.21.1
🔗 References (6)
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-5hx5-vpf9-5wcv
- https://nvd.nist.gov/vuln/detail/CVE-2026-113786
- https://github.com/py-pdf/pypdf/pull/4222
- https://github.com/py-pdf/pypdf/commit/512d8eb94eb04be1d1c90504e6da2dcef8679e07
- https://github.com/py-pdf/pypdf/releases/tag/6.21.1
- https://github.com/advisories/GHSA-5hx5-vpf9-5wcv