VDB
CVE-2026-33123
CVE-2026-33123
PUBLISHED
CVSS 5.099999904632568 MEDIUM
pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or large memory usage. Exploitation requires accessing an array-based stream with many entries. This issue has been fixed in version 6.9.1.
EPSS 0.01% · 2.7th percentile
Risk Scores
CVSS 4.0
5.099999904632568
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
EPSS Score
0.01%
2.7th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| PyPI | pypdf | 0, 0, 0 |
| py-pdf | pypdf | < 6.9.1, < 6.9.1, * |
| pypdf_project | pypdf | 0, 0, 0 |
Timeline
- Mar 18, 2026 CVE Published
- Mar 19, 2026 Security Advisory
- Mar 20, 2026 CVE Updated
- Mar 20, 2026 EPSS Score
- Mar 20, 2026 PoC Published
- Mar 21, 2026 EPSS Score
- Mar 22, 2026 EPSS Score
- Mar 22, 2026 Coalition ESS Score
- Mar 23, 2026 EPSS Score
- Mar 24, 2026 EPSS Score
- Mar 25, 2026 EPSS Score
- May 18, 2026 EPSS Score
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-qpxp-75px-xjcp url
- https://github.com/py-pdf/pypdf/pull/3686 url
- https://github.com/py-pdf/pypdf/releases/tag/6.9.1 url
- https://nvd.nist.gov/vuln/detail/CVE-2026-33123 advisory
- https://github.com/py-pdf/pypdf package
- https://www.ibm.com/support/pages/node/7271707 advisory
- https://www.ibm.com/support/pages/node/7271922 advisory
- https://www.ibm.com/support/pages/node/7271681 advisory
- https://www.ibm.com/support/pages/node/7271765 advisory