Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') Affecting litellm package, versions <1.82.3.0-r4


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-LITELLM-16103754
  • published18 Apr 2026
  • disclosed17 Apr 2026

Introduced: 17 Apr 2026

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

How to fix?

Upgrade Chainguard litellm to version 1.82.3.0-r4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream litellm package and not the litellm 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