CVE.RADIO
FREN

CVE-2026-71870

py-pdf pypdfVulnerabilityCVSS 4.8

pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause large memory consumption when pypdf/_cmap.py function parse_bfrange parses unusually large source-code or destination-string tokens in a font /ToUnicode CMap during text extraction. This issue is fixed in 6.15.0.

No public exploitation has been reported so far. No distribution fix is listed yet; apply vendor mitigations and monitor.

Recommended action: Track your distribution's security tracker and apply the fix as soon as it ships.

CVE-2026-71870 py-pdf pypdf Vulnerability

Severity metrics

CVSS 4.0 : 4.8 MEDIUM

Attack vectorLocal
Attack complexityLow
Attack requirementsNone
Privileges requiredNone
User interactionPassive
Confidentiality impactNone
Integrity impactNone
Availability impactLow
Subsequent confidentialityNone
Subsequent integrityNone
Subsequent availabilityNone

Vector: AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Affected & fixed versions by distribution

Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.

No affected package in the tracked watchlist yet (Debian, Ubuntu, Arch, SUSE, Red Hat...). Triage may still be pending.

Sources

Advisory NVD CVE.org

Other vulnerabilities in py-pdf pypdf

Published 2026-08-07 · updated 2026-08-08 · source: GHSA