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CVE-2026-12798

BerriAI litellm MCP OpenAPI Spec Loader openapi_to_mcp_generator.py load_openapi_spec_async server-side request forgery

Published: Jun 21, 2026Updated: Jun 22, 2026 Sources: CVE List NVDCWE-918
NVD MITRE
6.3CVSSMEDIUM
EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

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 Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-918

Affected Products

litellmBerriAI
SaaS
AI / ML / llm-serving-inference
berriaicommercialAI / MLaka litellm, berriai/litellm

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Command and Control
Initial Access
View detailed technique mapping

References

https://gist.github.com/YLChen-007/c1104c529975699ba347feedfbe02c5a
gist.github.com
https://vuldb.com/cve/CVE-2026-12798
vuldb.com
https://vuldb.com/submit/811290
vuldb.com
and 2 more references View all →

Timeline

Published
Jun 21, 2026
Last Updated
Jun 22, 2026

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