Resource Exhaustion Affecting pypdf package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-PYPDF-18596465
- published8 Aug 2026
- disclosed7 Aug 2026
Introduced: 7 Aug 2026
NewCVE-2026-71870 (opens in a new tab)How to fix?
There is no fixed version for Debian:unstable pypdf.
NVD Description
Note: Versions mentioned in the description apply only to the upstream pypdf package and not the pypdf package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause large memory consumption when pypdf/_cmap.py function parse_bfrange parses unusually large source-code or destination-string tokens in a font /ToUnicode CMap during text extraction. This issue is fixed in 6.15.0.
References
- https://security-tracker.debian.org/tracker/CVE-2026-71870
- https://github.com/py-pdf/pypdf/commit/afba8080e19d29a3c256a742b340995e695b35aa
- https://github.com/py-pdf/pypdf/pull/3944
- https://github.com/py-pdf/pypdf/releases/tag/6.15.0
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-fp3f-mc75-235c