CVE-2026-102996
8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| py-pdf | pypdf | < 6.18.1 | affected |
Weaknesses
- CWE-400: CWE-400: Uncontrolled Resource Consumption
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-g9cg-prrw-2r8q
- https://github.com/py-pdf/pypdf/pull/4072
- https://github.com/py-pdf/pypdf/commit/0fb26eb8cdd01c44b3b2c9fe8329751be2f7cfd5
- https://github.com/py-pdf/pypdf/releases/tag/6.18.1
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