CVE-2026-12798: Litellm BerriAI Litellm Has SSRF Vulnerability

LOW
Advisory Identifier: GHSA-c693-x898-5g4h
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CVSS 6.3
CWE-918
Published
Advisory Summary

CVE-2026-12798 is a LOW (CVSS 6.3) berriai litellm has ssrf vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Litellm libraries in the PyPI ecosystem. The issue involves berriai litellm has ssrf via unvalidated spec_path url in mcp openapi spec loader. Remediation is available in the latest vendor maintenance releases.

CVE-2026-12798 at a Glance

CVE Identifier CVE-2026-12798
GHSA Identifier GHSA-c693-x898-5g4h
Severity LOW
CVSS v3.1 Base Score 6.3
CWE Classification CWE-918: Server-Side Request Forgery (SSRF)
Affected Product Litellm
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2026-12798

To remediate this vulnerability, upgrade all affected Litellm dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

litellm fixed: Latest secure release 
pip install litellm>=Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show litellm

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-12798, inspect your installed packages using pip:

pip show litellm

Analyze the terminal output to locate any version of Litellm in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The pip show litellm command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-918: Server-Side Request Forgery (SSRF), where 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. In Litellm, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2026-12798 Affected Litellm Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
litellm
pypi/litellm
PyPI
≤ 1.82.2

References

NVD — CVE-2026-12798 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12798
Litellm Source Repository REPOSITORY
https://gist.github.com/YLChen-007/c1104c529975699ba347feedfbe02c5a
Litellm Source Repository REPOSITORY
https://github.com/BerriAI/litellm
vuldb.com/cve/cve-2026-12798 WEB
https://vuldb.com/cve/CVE-2026-12798
vuldb.com/submit/811290 WEB
https://vuldb.com/submit/811290
vuldb.com/vuln/372560 WEB
https://vuldb.com/vuln/372560
vuldb.com/vuln/372560/cti WEB
https://vuldb.com/vuln/372560/cti

Frequently Asked Questions

What is CVE-2026-12798?
CVE-2026-12798 is a security vulnerability in Litellm involving BerriAI litellm has SSRF via Unvalidated spec_path URL in MCP OpenAPI Spec Loader under CWE-918: Server-Side Request Forgery (SSRF).
Which Litellm versions are affected?
Affected versions include releases prior to current release patches across affected packages: litellm.
What version fixes CVE-2026-12798?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is litellm affected?
Yes, litellm is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2026-12798?
CVE-2026-12798 has a CVSS v3.1 base score of 6.3 (LOW) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2026-12798?
CVE-2026-12798 is classified under CWE-918: Server-Side Request Forgery (SSRF) (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.).
How can I check PyPI dependencies for CVE-2026-12798?
Run the dependency tree command: 'pip show litellm'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-c693-x898-5g4h",
  "modified" : "2026-09-14T18:11:43Z",
  "published" : "2026-06-21T12:30:52Z",
  "aliases" : [ "CVE-2026-12798" ],
  "summary" : "BerriAI litellm has SSRF via Unvalidated spec_path URL in MCP OpenAPI Spec Loader",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS: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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "litellm"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.82.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-12798"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/YLChen-007/c1104c529975699ba347feedfbe02c5a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/BerriAI/litellm"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/cve/CVE-2026-12798"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/submit/811290"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/372560"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/372560/cti"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-14T18:11:43Z",
    "nvd_published_at" : "2026-06-21T10:16:17Z"
  }
}