BerriAI litellm up to 1.82.2 MCP OpenAPI Spec Loader openapi_to_mcp_generator.py load_openapi_spec_async spec_path server-side request forgery

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k2.37

Summaryinfo

A vulnerability was found in BerriAI litellm up to 1.82.2. It has been declared as critical. Affected by this issue 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. Such manipulation of the argument spec_path leads to server-side request forgery. This vulnerability is referenced as CVE-2026-12798. It is possible to launch the attack remotely. Furthermore, an exploit is available. The vendor was contacted early about this disclosure.

Detailsinfo

A vulnerability was found in BerriAI litellm up to 1.82.2 and classified as critical. Affected by this issue 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. The manipulation of the argument spec_path with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality, integrity, and availability.

The advisory is shared for download at gist.github.com. This vulnerability is handled as CVE-2026-12798. The exploitation is known to be easy. The attack may be launched remotely. Technical details as well as a public exploit are known.

The exploit is available at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/20/2026 Advisory disclosed
06/20/2026 +0 days VulDB entry created
06/20/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2026-12798 (🔒)
GCVE (CVE): GCVE-0-2026-12798
GCVE (VulDB): GCVE-100-372560
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/20/2026 19:17
Changes: 06/20/2026 19:17 (58)
Complete: 🔍
Submitter: Eric-c
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #811290: litellm latest Server-Side Request Forgery (SSRF) (CWE-918) (by Eric-c)

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