VDB
CVE-2026-113793
CVE-2026-113793
PUBLISHED
CVSS 6 MEDIUM
Reported by GitHub_M · Published October 21, 2026
pypdf is a free and open-source pure-python PDF library. Prior to 6.20.1, removing an object from a crafted cyclic PDF tree, such as an outline item, can enter an infinite loop and block the current process. This issue is fixed in version 6.20.1.
Risk Scores
CVSS 4.0
6
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| py-pdf | pypdf | < 6.20.1 |
| chainguard | open-webui | 0 |
| wolfi | open-webui | 0 |
| chainguard | litellm-fips | 0 |
| chainguard | litellm | 0 |
| PyPI | pypdf | 0 |
| py-pdf | pypdf | 0 |
Timeline
- Oct 21, 2026 CVE Published
- Oct 22, 2026 EPSS Score
- Oct 22, 2026 Coalition ESS Score
- Oct 25, 2026 EPSS Score
- Oct 28, 2026 CVE Updated
- Oct 29, 2026 EPSS Score
- Oct 30, 2026 Security Advisory
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-9mx8-4j7g-633p x_refsource_CONFIRM
- https://github.com/py-pdf/pypdf/pull/4188 x_refsource_MISC
- https://github.com/py-pdf/pypdf/commit/c9c35b4471c2eb5fe078094f6c816e69d4ed25a0 x_refsource_MISC
- https://github.com/py-pdf/pypdf/releases/tag/6.20.1 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-113793 advisory
- https://github.com/advisories/GHSA-9mx8-4j7g-633p advisory