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CVE-2026-12773

A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/_experimental/mcp_server/auth/user_api_key_auth_mcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:458dcadebc52f1ab28887f2e0e85ad1b322844a40f372f03d6df1d7179cfbfab
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
3

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 7 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unaffected","packageName":"rhoai/odh-trustyai-garak-lls-provider-dsp-rhel9","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/affected/5

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unaffected","packageName":"rhoai/odh-llama-stack-core-rhel9","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/affected/3

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"],"defaultStatus":"unaffected","packageName":"ansible-automation-platform-27/lightspeed-chatbot-rhel9","product":"Red Hat Ansible Automation Platform 2","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/affected/2

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:exploit_intelligence:0"],"defaultStatus":"affected","packageName":"exploit-intelligence-tech-preview/vulnerability-analysis-rhel9","product":"Exploit Intelligence","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unaffected","packageName":"rhoai/odh-mlflow-rhel9","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/affected/4

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"],"defaultStatus":"unaffected","packageName":"ansible-automation-platform-26/lightspeed-chatbot-rhel9","product":"Red Hat Ansible Automation Platform 2","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/affected/1

{"cpes":["cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*"],"modules":["MCP Proxy"],"product":"litellm","vendor":"BerriAI","versions":[{"status":"affected","version":"1.59.0"},{"status":"affected","version":"1.59.1"},{"status":"affected","version":"1.59.2"},{"status":"affected","version":"1.59.3"},{"status":"affected","version":"1.59.4"},{"status":"affected","version":"1.59.5"},{"status":"affected","version":"1.59.6"},{"status":"affected","version":"1.59.7"},{"status":"affected","version":"1.59.8"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/affected/0
cvss · 5 assertions

{"metric":{"baseScore":7.3,"baseSeverity":"HIGH","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/metrics/1/cvssV3_1

{"metric":{"baseScore":7.3,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"baseScore":7.5,"vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/metrics/3/cvssV2_0
cwe · 2 assertions

{"cweId":"CWE-287","description":"Improper Authentication","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-303","description":"Incorrect Implementation of Authentication Algorithm","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/problemTypes/0/descriptions/0

Affected products and versions

7 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unaffected","packageName":"rhoai/odh-trustyai-garak-lls-provider-dsp-rhel9","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/affected/5
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unaffected","packageName":"rhoai/odh-llama-stack-core-rhel9","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"],"defaultStatus":"unaffected","packageName":"ansible-automation-platform-27/lightspeed-chatbot-rhel9","product":"Red Hat Ansible Automation Platform 2","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/affected/2
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:exploit_intelligence:0"],"defaultStatus":"affected","packageName":"exploit-intelligence-tech-preview/vulnerability-analysis-rhel9","product":"Exploit Intelligence","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unaffected","packageName":"rhoai/odh-mlflow-rhel9","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/affected/4
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"],"defaultStatus":"unaffected","packageName":"ansible-automation-platform-26/lightspeed-chatbot-rhel9","product":"Red Hat Ansible Automation Platform 2","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/affected/1
{"cpes":["cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*"],"modules":["MCP Proxy"],"product":"litellm","vendor":"BerriAI","versions":[{"status":"affected","version":"1.59.0"},{"status":"affected","version":"1.59.1"},{"status":"affected","version":"1.59.2"},{"status":"affected","version":"1.59.3"},{"status":"affected","version":"1.59.4"},{"status":"affected","version":"1.59.5"},{"status":"affected","version":"1.59.6"},{"status":"affected","version":"1.59.7"},{"status":"affected","version":"1.59.8"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/affected/0

Provider-owned CVSS observations

5 source assertions
{"metric":{"baseScore":7.3,"baseSeverity":"HIGH","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/metrics/1/cvssV3_1
{"metric":{"baseScore":7.3,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"baseScore":7.5,"vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/metrics/3/cvssV2_0

CWE assertions

2 source assertions
{"cweId":"CWE-287","description":"Improper Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-303","description":"Incorrect Implementation of Authentication Algorithm","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/problemTypes/0/descriptions/0

Source references

9 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-12773"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/references/0
{"name":"RHBZ#2491112","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2491112"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/references/1
{"tags":["exploit"],"url":"https://gist.github.com/YLChen-007/3cfaad10a69d7a15e4d4d458cb53309e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/references/4
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12773.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/1/references/2
{"name":"CVE-2026-12773 | CVE Analysis and Report","tags":["third-party-advisory"],"url":"https://vuldb.com/cve/CVE-2026-12773"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/references/2
{"name":"Submit #811282 | litellm <= 1.59.8 Improper Authentication (CWE-287)","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/811282"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/references/3
{"tags":["exploit"],"url":"https://vuldb.com/submit/811282"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/adp/0/references/0
{"name":"VDB-372515 | BerriAI litellm MCP Proxy user_api_key_auth_mcp.py UserAPIKeyAuth improper authentication","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/372515"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/references/0
{"name":"VDB-372515 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/372515/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e64df9ce624f306b47873a860f4ff9d1e8fd511a6ba90e634ab9ea0c5ea6ca50 · sha256:bda724e2d2bb74ad… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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