CVE-2026-12797: BerriAI litellm Completions banned_keywords.py async_pre_call_hook authorization

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-06-21 · updated 2026-10-25
Weakness: CWE-285

Description

A security flaw has been discovered in BerriAI litellm up to 1.82.5. Affected is the function async_pre_call_hook of the file enterprise/enterprise_hooks/banned_keywords.py of the component Completions Interface. The manipulation of the argument prompt results in incorrect authorization. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure.

Affected products

BerriAI litellm: through 1.82.5

References

https://gist.github.com/YLChen-007/078179224f07cc4e39e4f141a18c817a
https://vuldb.com/cve/CVE-2026-12797
https://vuldb.com/submit/811288
https://vuldb.com/vuln/372559
https://vuldb.com/vuln/372559/cti

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