PT-2026-32055 · Pypi · Pypdf

Published 2026-04-10 · Updated 2026-05-21 · CVE-2026-40260

Positive Technologies (AI Summary)

CVSS v4.0

6.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.10.0

Description Manipulated XMP metadata entity declarations can exhaust RAM. An attacker can craft a PDF that leads to large memory usage when the XMP metadata is parsed.

Recommendations Update to version 6.10.0. As a temporary workaround, apply the changes from PR #3724.

Fix

XML Entity Expansion

Weakness Enumeration

CWE-776

Related Identifiers

CVE-2026-40260

GHSA-3CRG-W4F6-42MX

OPENSUSE-SU-2026:10582-1

OPENSUSE-SU-2026:10583-1

OPENSUSE-SU-2026:20598-1

Affected Products

Pypdf

References · 20

• https://github.com/py-pdf/pypdf/security/advisories/GHSA-3crg-w4f6-42mx · Vendor Advisory
• https://github.com/py-pdf/pypdf/pull/3724 · Patch
• https://github.com/py-pdf/pypdf/commit/b15a374e5ca648d4878e57c3b2c0551e7f8cc7f8 · Patch
• https://cve.org/CVERecord?id=CVE-2026-40260 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-40260 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10583-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-40260 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10582-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40260 · Security Note
• https://osv.dev/vulnerability/ROOT-APP-PYPI-CVE-2026-40260 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-40260 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-40260 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-3crg-w4f6-42mx · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:20598-1 · Vendor Advisory
• https://github.com/py-pdf/pypdf · Note