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01 Record

CVE-2026-35030

LiteLLM has an authentication bypass via OIDC userinfo cache key collision

CriticalPUBLISHEDCNA: GitHub_M
CNA base score9.4 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
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02 Description

LiteLLM has an authentication bypass via OIDC userinfo cache key collision

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.62% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 49.6% of scored records. A rank, not a probability.
NVD base score
9.4 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Modified. NVD last modified this record on 2026-10-24.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-04-06 16:47Z6 MO AGO
Last updated
2026-07-15 01:03Z3 MO AGO
Reserved
2026-03-31
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Critical (CVSS 9.4)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Weaknesses
  • CWE-287Improper AuthenticationClass
  • CWE-222Truncation of Security-relevant InformationBase
Data version
5.2
Document digest
a45fc284591ebd00e9b227540e5513279b7e0f2a28aa2df465276b70ce01d971

05 Affected products

VendorProductVersionsPlatforms
BerriAIlitellm< 1.83.0—

06 References