Vulnerability-Lookup

FKIE_CVE-2026-42271

Vulnerability from fkie_nvd - Published: 2026-05-08 04:16 - Updated: 2026-10-26 20:10

Severity

8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.74.2 to before version 1.83.7, two endpoints used to preview an MCP server before saving it — POST /mcp-rest/test/connection and POST /mcp-rest/test/tools/list — accepted a full server configuration in the request body, including the command, args, and env fields used by the stdio transport. When called with a stdio configuration, the endpoints attempted to connect, which spawned the supplied command as a subprocess on the proxy host with the privileges of the proxy process. The endpoints were gated only by a valid proxy API key, with no role check. Any authenticated user — including holders of low-privilege internal-user keys — could therefore run arbitrary commands on the host. This issue has been patched in version 1.83.7.

References

URL	Tags
security-advisories@github.com	https://github.com/BerriAI/litellm/releases/tag/v1.83.7-stable	Product, Release Notes
security-advisories@github.com	https://github.com/BerriAI/litellm/security/advisories/GHSA-v4p8-mg3p-g94g	Mitigation, Patch, Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:27784	Third Party Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:28960	Third Party Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:30056	Third Party Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/security/cve/CVE-2026-42271	Third Party Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://bugzilla.redhat.com/show_bug.cgi?id=2467924	Third Party Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42271.json	Third Party Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0	https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-42271	US Government Resource

Impacted products

Vendor	Product	Version
litellm	litellm	*
redhat	openshift_ai	*
redhat	openshift_ai	*
redhat	openshift_ai	3.4

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "litellm",
          "vendor": "BerriAI",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.74.2, \u003c 1.83.7"
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      ],
      "source": "security-advisories@github.com"
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    {
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          "defaultStatus": "affected",
          "packageName": "rhoai/odh-llama-stack-core-rhel9",
          "product": "Red Hat OpenShift AI 2.25",
          "vendor": "Red Hat",
          "versions": [
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              "versionType": "rpm"
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        {
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          "cpes": [
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          "packageName": "rhoai/odh-llama-stack-core-rhel9",
          "product": "Red Hat OpenShift AI 3.3",
          "vendor": "Red Hat",
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          "cpes": [
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  "cisaActionDue": "2026-06-22",
  "cisaExploitAdd": "2026-06-08",
  "cisaRequiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
  "cisaVulnerabilityName": "BerriAI LiteLLM Command Injection Vulnerability",
  "configurations": [
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      "value": "LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.74.2 to before version 1.83.7, two endpoints used to preview an MCP server before saving it \u2014 POST /mcp-rest/test/connection and POST /mcp-rest/test/tools/list \u2014 accepted a full server configuration in the request body, including the command, args, and env fields used by the stdio transport. When called with a stdio configuration, the endpoints attempted to connect, which spawned the supplied command as a subprocess on the proxy host with the privileges of the proxy process. The endpoints were gated only by a valid proxy API key, with no role check. Any authenticated user \u2014 including holders of low-privilege internal-user keys \u2014 could therefore run arbitrary commands on the host. This issue has been patched in version 1.83.7."
    },
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    }
  ],
  "id": "CVE-2026-42271",
  "lastModified": "2026-10-26T20:10:00.160",
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
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          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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        },
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        "impactScore": 5.9,
        "source": "nvd@nist.gov",
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      },
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          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
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          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
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          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
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          "value": "CWE-77"
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        {
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          "value": "CWE-78"
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}

CVE-2026-42271 (GCVE-0-2026-42271)

Vulnerability from cvelistv5 – Published: 2026-05-08 03:35 – Updated: 2026-07-15 00:57

Title

LiteLLM: Authenticated command execution via MCP stdio test endpoints

Summary

Severity

8.7 (High)


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

8.8 (High)


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

SSVC

Exploitation: active Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-08 00:00 UTC

CWE

CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7994 records in the last 180 days details

References

9 references

URL	Tags
https://github.com/BerriAI/litellm/security/advis…	x_refsource_CONFIRM
https://github.com/BerriAI/litellm/releases/tag/v…	x_refsource_MISC
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource
https://access.redhat.com/security/cve/CVE-2026-42271	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2467924	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:28960	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:30056	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27784	vendor-advisoryx_refsource_REDHAT

Impacted products

7 products

Vendor	Product	Version
BerriAI	litellm	Affected: >= 1.74.2, < 1.83.7
Red Hat	Red Hat OpenShift AI 2.25	Unaffected: 1781826406 , < * (rpm) cpe:/a:redhat:openshift_ai:2.25::el9
Red Hat	Red Hat OpenShift AI 3.3	Unaffected: 1782310008 , < * (rpm) cpe:/a:redhat:openshift_ai:3.3::el9
Red Hat	Red Hat OpenShift AI 3.4	Unaffected: 1781622627 , < * (rpm) cpe:/a:redhat:openshift_ai:3.4::el9
Red Hat	Exploit Intelligence	cpe:/a:redhat:exploit_intelligence:0
Red Hat	Red Hat Ansible Automation Platform 2	cpe:/a:redhat:ansible_automation_platform:2
Red Hat	Red Hat OpenShift AI (RHOAI)	cpe:/a:redhat:openshift_ai

Show details on NVD website

JSON

To clipboard

{
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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