CVE-2026-115585

UNKNOWN 0.0

pypdf: Possible long runtimes for repeated malformed cross-reference entries (Follow-up)

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-400 CWE-407
Vendor	py-pdf
Product	pypdf
Published	Oct 23, 2026

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Affected Versions

py-pdf / pypdf

< 6.21.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/py-pdf/pypdf/security/advisories/GHSA-jr96-gvgh-j3r4 github.com: https://github.com/py-pdf/pypdf/pull/4240 github.com: https://github.com/py-pdf/pypdf/commit/68a0e5046cc9e14a6c24a21a713f3c7fbde18b4b github.com: https://github.com/py-pdf/pypdf/releases/tag/6.21.2