OpenLIT 2.1.0 Authorization Bypass via x-openlit-project-id Header

Advisories

OpenLIT 2.1.0 Authorization Bypass via x-openlit-project-id Header

severity: medium
date: 10/10/2026
Affecting: openlit >= 2.1.0, <= 2.1.0
CVE: CVE-2026-108596
CWE: CWE-639 Authorization Bypass Through User-Controlled Key
CVSS: 6.0
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
References: https://hackmd.io/@haind/openlit-project-context-read
https://github.com/openlit/openlit/blob/9938c66638666ca5d3bcb850350faa82e510924b/src/client/src/lib/telemetry-source.ts#L113-L125
https://github.com/openlit/openlit/blob/9938c66638666ca5d3bcb850350faa82e510924b/src/client/src/middleware/check-auth.ts#L22-L33
https://github.com/openlit/openlit
Credit: HaiND from the Post and Telecommunication Institute of Technology
Description: OpenLIT 2.1.0 contains an authorization bypass vulnerability that allows authenticated users to read other projects' telemetry by supplying a forged x-openlit-project-id header. Attackers who know a victim project id and database config id can query the trace read API to obtain traces including LLM prompts and completions.

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