CVE-2026-33699
Last modified
CVE-2026-33699 is a medium-severity vulnerability rated 4.6/10 on the CVSS scale. 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. EPSS estimates a 0.46% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/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 | < 6.9.2 |
References
- https://github.com/py-pdf/pypdf/pull/3693Issue Tracking, Patch
- https://github.com/py-pdf/pypdf/releases/tag/6.9.2Product, Release Notes
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-87mj-5ggw-8qc3Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-33699?
How severe is CVE-2026-33699?
How do I fix CVE-2026-33699?
Are you affected by CVE-2026-33699?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST