How severe is CVE-2026-12774?

CVE-2026-12774 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-12774 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-12774?

CVE-2026-12774 affects Litellm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-12774?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-12774 have an EU (EUVD) identifier?

Yes. CVE-2026-12774 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38140.

When was CVE-2026-12774 published?

CVE-2026-12774 was published on 2026-06-21 and last updated on 2026-06-24.

CVE-2026-12774

CVE-2026-12774 is a medium-severity vulnerability in Litellm with a CVSS 3.x base score of 6.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38140
Weakness: CWE-918
Affected product: Litellm
Published: 2026-06-21
Last modified: 2026-06-24

Description

A security vulnerability has been detected in BerriAI litellm up to 1.82.2. Affected by this vulnerability is the function _execute_with_mcp_client of the file litellm/proxy/_experimental/mcp_server/rest_endpoints.py of the component MCP Server Connection Testing. The manipulation leads to server-side request forgery. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure.

Frequently asked questions

What is CVE-2026-12774?: A security vulnerability has been detected in BerriAI litellm up to 1.82.2. Affected by this vulnerability is the function _execute_with_mcp_client of the file litellm/proxy/_experimental/mcp_server/rest_endpoints.py of the component MCP Server Connection Testing. The manipulation leads to server-side request forgery. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure.
How severe is CVE-2026-12774?: CVE-2026-12774 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-12774 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-12774?: CVE-2026-12774 affects Litellm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-12774?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-12774 have an EU (EUVD) identifier?: Yes. CVE-2026-12774 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38140.
When was CVE-2026-12774 published?: CVE-2026-12774 was published on 2026-06-21 and last updated on 2026-06-24.

References

Affected products (1)

cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*

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