CVE-2026-12798

A weakness has been identified in BerriAI litellm up to 1.82.2. Affected by this vulnerability is the function load_openapi_spec_async of the file litellm/proxy/_experimental/mcp_server/openapi_to_mcp_generator.py of the component MCP OpenAPI Spec Loader. This manipulation of the argument spec_path causes server-side request forgery. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.

CVSS 4.0

2.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

CVSS 3.1

6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS

0.4% chance of exploitation in the next 30 days; higher than 33% of CVEs (scores of 2026-10-25)

CWE

CWE-918

Published

2026-06-21

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

Affected

• litellm:litellm

Packages (OSV)

References

• https://gist.github.com/YLChen-007/c1104c529975699ba347feedfbe02c5a
• https://vuldb.com/cve/CVE-2026-12798
• https://vuldb.com/submit/811290
• https://vuldb.com/vuln/372560
• https://vuldb.com/vuln/372560/cti

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