CVE-2026-59938
Last modified
CVE-2026-59938 is a medium-severity vulnerability rated 5.3/10 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 declared image size values that are much too large compared to the actual data, causing large memory usage in pypdf image parsing. EPSS estimates a 0.33% 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 declared image size values that are much too large compared to the actual data, causing large memory usage in pypdf image parsing. This issue is fixed in version 6.14.0.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Pypdf Project | Pypdf | < 6.14.0 |
References
- https://github.com/py-pdf/pypdf/pull/3888Issue Tracking, Patch
- https://github.com/py-pdf/pypdf/releases/tag/6.14.0Product, Release Notes
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-5qjq-93h5-hrgpPatch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-59938?
How severe is CVE-2026-59938?
How do I fix CVE-2026-59938?
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.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-59931PhpSpreadsheet is a pure PHP library for reading and writing…7.7
- CVE-2026-59932PhpSpreadsheet is a pure PHP library for reading and writing…7.5
- CVE-2026-59933PhpSpreadsheet is a pure PHP library for reading and writing…7.5
- CVE-2026-59935pypdf is a free and open-source pure-python PDF library. Pri…7.5
- CVE-2026-59936pypdf is a free and open-source pure-python PDF library. Pri…7.5
- CVE-2026-59937pypdf is a free and open-source pure-python PDF library. Pri…7.5
- CVE-2026-59939httplib2 is a comprehensive HTTP client library for Python. …7.5
- CVE-2026-5994A security flaw has been discovered in Totolink A7100RU 7.4c…9.8
- CVE-2026-59941Dompdf is an HTML to PDF converter for PHP. Versions 3.15 an…7.5
- CVE-2026-59942Dompdf is an HTML to PDF converter for PHP. Versions 3.15 an…7.5
- CVE-2026-59943Dompdf is an HTML to PDF converter for PHP. In versions 3.15…5.3
- CVE-2026-59946Composer is a dependency Manager for the PHP language. Prior…6.1
Are you affected by CVE-2026-59938?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST