VDB
CVE-2026-115585
CVE-2026-115585
PUBLISHED
CVSS 7.1 HIGH
Reported by GitHub_M · Published October 23, 2026
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an incomplete remediation for repeated malformed cross-reference entries in GHSA-55h5-xmcq-c37v could still trigger a complete PDF stream reload during each recovery attempt even when a recovery cache was present, causing crafted cross-reference streams to produce long runtimes. This issue is fixed in version 6.21.2.
Risk Scores
CVSS 4.0
7.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| py-pdf | pypdf | < 6.21.2 |
| PyPI | pypdf | 0 |
| chainguard | open-webui | 0 |
| wolfi | open-webui | 0 |
| py-pdf | pypdf | 0 |
Timeline
- Oct 23, 2026 CVE Published
- Oct 23, 2026 Coalition ESS Score
- Oct 24, 2026 EPSS Score
- Oct 25, 2026 EPSS Score
- Oct 27, 2026 EPSS Score
- Oct 29, 2026 EPSS Score
- Oct 30, 2026 CVE Updated
- Oct 30, 2026 Security Advisory
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-jr96-gvgh-j3r4 x_refsource_CONFIRM
- https://github.com/py-pdf/pypdf/pull/4240 x_refsource_MISC
- https://github.com/py-pdf/pypdf/commit/68a0e5046cc9e14a6c24a21a713f3c7fbde18b4b x_refsource_MISC
- https://github.com/py-pdf/pypdf/releases/tag/6.21.2 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-115585 advisory
- https://github.com/advisories/GHSA-jr96-gvgh-j3r4 advisory