High severity7.5NVD Advisory· Published Mar 27, 2026· Updated Apr 1, 2026
CVE-2026-33699
CVE-2026-33699
Description
pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.2 have a vulnerability in which an attacker can craft a PDF which leads to an infinite loop. This requires reading a file in non-strict mode. This has been fixed in pypdf 6.9.2. If users cannot upgrade yet, consider applying the changes from the patch manually.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pypdfPyPI | < 6.9.2 | 6.9.2 |
Affected products
5- osv-coords4 versionspkg:apk/chainguard/open-webuipkg:apk/wolfi/open-webuipkg:pypi/pypdfpkg:rpm/opensuse/python-pypdf&distro=openSUSE%20Tumbleweed
< 0.8.12-r2+ 3 more
- (no CPE)range: < 0.8.12-r2
- (no CPE)range: < 0.8.12-r2
- (no CPE)range: < 6.9.2
- (no CPE)range: < 6.9.2-1.1
Patches
Vulnerability mechanics
References
5- github.com/py-pdf/pypdf/pull/3693nvdIssue TrackingPatchWEB
- github.com/py-pdf/pypdf/security/advisories/GHSA-87mj-5ggw-8qc3nvdPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-87mj-5ggw-8qc3ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-33699ghsaADVISORY
- github.com/py-pdf/pypdf/releases/tag/6.9.2nvdProductRelease NotesWEB
News mentions
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