High severity7.1NVD Advisory· Published Oct 23, 2026

CVE-2026-115585

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Py PDF/Pypdfllm-fuzzy
Range: <6.21.2

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-jr96-gvgh-j3r4ghsaADVISORY
github.com/py-pdf/pypdf/commit/68a0e5046cc9e14a6c24a21a713f3c7fbde18b4bnvd
github.com/py-pdf/pypdf/pull/4240nvd
github.com/py-pdf/pypdf/releases/tag/6.21.2nvd
github.com/py-pdf/pypdf/security/advisories/GHSA-jr96-gvgh-j3r4nvd

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cvss	0.455
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000