CVE-2026-115585

HighCVSS 7.1/10Last modified Oct 23, 2026

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.

Metrics

CVSS 4.0 7.1/10CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness enumeration

CWE-400CWE-407

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
py-pdfpypdf< 6.21.2

References

Timeline

Published
Oct 23, 2026
Last modified
Oct 23, 2026
NVD status
Received

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