CVE-2026-102996
CVE-2026-102996
8.7
HighPublished:
Last updated:
Source:security-advisories@github.com
Analyzed
Weakness (CWE)
CVSS Vector
v4.0- Attack Vector
- Network
- Attack Complexity
- Low
- Attack Requirements
- None
- Privileges Required
- None
- User Interaction
- None
- Confidentiality (Vulnerable)
- None
- Integrity (Vulnerable)
- None
- Availability (Vulnerable)
- High
- Confidentiality (Subsequent)
- None
- Integrity (Subsequent)
- None
- Availability (Subsequent)
- None
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can provide a TrueType or Type1 simple font with an unusually large /Widths array, causing pypdf/_font.py Font._collect_tt_t1_character_widths to process entries beyond the 256 character codes meaningful for a simple font and consume excessive memory during operations such as text extraction. This issue is fixed in version 6.18.1.
References
security-advisories@github.com
https://github.com/py-pdf/pypdf/commit/0fb26eb8cdd01c44b3b2c9fe8329751be2f7cfd5security-advisories@github.com
https://github.com/py-pdf/pypdf/pull/4072security-advisories@github.com
https://github.com/py-pdf/pypdf/releases/tag/6.18.1security-advisories@github.com
https://github.com/py-pdf/pypdf/security/advisories/GHSA-g9cg-prrw-2r8q