CVE-2026-59937
Last modified
CVE-2026-59937 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with repeated malformed cross-reference streams that cause pypdf to spend long runtimes recovering broken cross-reference table entries. EPSS estimates a 0.30% chance of exploitation in the next 30 days.
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with repeated malformed cross-reference streams that cause pypdf to spend long runtimes recovering broken cross-reference table entries. This issue is fixed in version 6.14.0.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Pypdf Project | Pypdf | < 6.14.0 |
References
- https://github.com/py-pdf/pypdf/pull/3887Issue Tracking, Patch
- https://github.com/py-pdf/pypdf/releases/tag/6.14.0Product, Release Notes
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-55h5-xmcq-c37vPatch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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