VDB
CVE-2026-71870
CVE-2026-71870
PUBLISHED
CVSS 4.8 MEDIUM
Reported by GitHub_M · Published August 7, 2026
pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause large memory consumption when pypdf/_cmap.py function parse_bfrange parses unusually large source-code or destination-string tokens in a font /ToUnicode CMap during text extraction. This issue is fixed in 6.15.0.
Risk Scores
CVSS 4.0
4.8
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| py-pdf | pypdf | < 6.15.0 |
| py-pdf | pypdf | < 6.15.0, < 6.15.0, < 6.15.0 |
| PyPI | pypdf | 0 |
| chainguard | open-webui | 0, 0, 0 |
| chainguard | nemo | 0, 0, 0 |
| chainguard | litellm | 0, 0, 0 |
| wolfi | open-webui | 0, 0, 0 |
Timeline
- Aug 7, 2026 CVE Published
- Aug 7, 2026 Coalition ESS Score
- Aug 8, 2026 EPSS Score
- Aug 9, 2026 CVE Updated
- Aug 9, 2026 Security Advisory
- Aug 24, 2026 EPSS Score
- Sep 14, 2026 EPSS Score
- Sep 24, 2026 EPSS Score
- Sep 26, 2026 EPSS Score
- Oct 6, 2026 EPSS Score
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-fp3f-mc75-235c x_refsource_CONFIRM
- https://github.com/py-pdf/pypdf/pull/3944 x_refsource_MISC
- https://github.com/py-pdf/pypdf/commit/afba8080e19d29a3c256a742b340995e695b35aa x_refsource_MISC
- https://github.com/py-pdf/pypdf/releases/tag/6.15.0 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-71870 advisory
- https://github.com/advisories/GHSA-fp3f-mc75-235c advisory