Resource Exhaustion Affecting pypdf package, versions <6.9.0-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.42% (34th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-PYPDF-15364940
  • published28 Feb 2026
  • disclosed27 Feb 2026

Introduced: 27 Feb 2026

CVE-2026-28351  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Debian:unstable pypdf to version 6.9.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pypdf package and not the pypdf package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.4, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter. This has been fixed in pypdf 6.7.4. As a workaround, consider applying the changes from PR #3664.

CVSS Base Scores

version 3.1