Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') Affecting open-webui package, versions <0.9.2-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.02% (5th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-OPENWEBUI-16337919
  • published2 May 2026
  • disclosed17 Apr 2026

Introduced: 17 Apr 2026

NewCVE-2026-40260  (opens in a new tab)
CWE-776  (opens in a new tab)

How to fix?

Upgrade Chainguard open-webui to version 0.9.2-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream open-webui package and not the open-webui package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

pypdf is a free and open-source pure-python PDF library. In versions prior to 6.10.0, manipulated XMP metadata entity declarations can exhaust RAM. An attacker who exploits this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the XMP metadata. This issue has been fixed in version 6.10.0.

CVSS Base Scores

version 3.1