py-pdf/pypdf · Security
pypdf possibly loops infinitely when reading DCT inline images without EOF marker
- GHSA ID
- GHSA-vr63-x8vc-m265
- CVE ID
- CVE-2025-62707
- Severity
- medium
- Published
- Updated
- CVSS v4
- 6.6 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
Description
Impact
An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires parsing the content stream of a page which has an inline image using the DCTDecode filter.
Patches
This has been fixed in pypdf==6.1.3.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #3501.
CWEs
- CWE-834 · Excessive Iteration
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-vr63-x8vc-m265 ↗
- https://github.com/py-pdf/pypdf/pull/3501 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2025-62707 ↗
- https://github.com/py-pdf/pypdf/commit/f2864d6dd9bac7cecd3f4f54308b25ebbfa178f8 ↗
- https://github.com/py-pdf/pypdf/releases/tag/6.1.3 ↗
- https://github.com/advisories/GHSA-vr63-x8vc-m265 ↗