PT-2026-34565 · Pypi · Pypdf

L3B4Nk4 · Published 2026-04-16 · Updated 2026-06-04 · CVE-2026-41312

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.10.2

Description A flaw in the pure-python PDF library allows an attacker to craft a PDF that leads to RAM exhaustion. This occurs when accessing a stream compressed using '/FlateDecode' with a /Predictor unequal to 1 and large predictor parameters.

Recommendations Update to version 6.10.2. As a temporary workaround, apply the changes from the patch manually.

Fix

Weakness Enumeration

CWE-789

Related Identifiers

CVE-2026-41312

GHSA-7GW9-CF7V-778F

OPENSUSE-SU-2026:10658-1

Affected Products

Pypdf

References · 17

• https://github.com/py-pdf/pypdf/commit/ac734dab4eef92bcce50d503949b4d9887d89f11 · Patch
• https://github.com/py-pdf/pypdf/security/advisories/GHSA-7gw9-cf7v-778f · Vendor Advisory
• https://github.com/py-pdf/pypdf/pull/3734 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-41312 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-7gw9-cf7v-778f · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-41312 · Security Note
• https://ubuntu.com/security/CVE-2026-41312 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-41312 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-41312 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-41312 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-APP-PYPI-CVE-2026-41312 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10658-1 · Vendor Advisory
• https://github.com/py-pdf/pypdf · Note
• https://github.com/py-pdf/pypdf/releases/tag/6.10.2 · Note
• https://suse.com/security/cve/CVE-2026-41168 · Note