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

{
  "id": "e343b834c55846cd8310b72beddbcc22f45b5a81ce58a277d03b2d3f09dbcbf6",
  "url": "https://osv.dev/vulnerability/CVE-2026-108596",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "OpenLIT 2.1.0 Authorization Bypass via x-openlit-project-id Header",
    "summary": "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.",
    "evidence": "osv:CVE-2026-108596",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-108596",
      "aliases": [
        "CVE-2026-108596"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "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"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openlit/openlit",
              "type": "GIT",
              "events": [
                {
                  "introduced": "9938c66638666ca5d3bcb850350faa82e510924b"
                },
                {
                  "last_affected": "9938c66638666ca5d3bcb850350faa82e510924b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "2.1.0"
                      },
                      {
                        "last_affected": "2.1.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.1.0",
            "openlit-2.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108596.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.418930433Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108596.json",
        "https://hackmd.io/@haind/openlit-project-context-read",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-108596",
        "https://www.vulncheck.com/advisories/openlit-2.1.0-authorization-bypass-via-x-openlit-project-id-header",
        "https://github.com/openlit/openlit",
        "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"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-639"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108596.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-108596",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504890,
  "published_at": "2026-10-10T18:58:13.358+00:00"
}