{"id":"CVE-2026-14199","summary":"Session takeover via Auth Proxy cache key collision","details":"Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than zero) are affected. The Auth Proxy cache key concatenated the username and forwarded identity attributes without a delimiter, so distinct identities could collide on one key. An authenticated user who shapes their own attributes to collide with a higher-privileged user's, while that user's cache entry is live, is authenticated as that user, up to Administrator (authentication bypass by spoofing).","aliases":["BIT-grafana-2026-14199"],"modified":"2026-09-17T03:47:26.991410671Z","published":"2026-09-02T16:06:28.165Z","related":["openSUSE-SU-2026:11684-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/14xxx/CVE-2026-14199.json","unresolved_ranges":[{"extracted_events":[{"introduced":"11.0.0"},{"last_affected":"11.6.17"},{"introduced":"12.0.0"},{"last_affected":"12.2.11"},{"introduced":"12.3.0"},{"last_affected":"12.3.11"},{"introduced":"12.4.0"},{"last_affected":"12.4.9"},{"introduced":"13.0.0"},{"last_affected":"13.0.7"},{"introduced":"13.1.0"},{"last_affected":"13.1.4"},{"introduced":"13.2.0"},{"last_affected":"13.2.0"},{"introduced":"11.0.0"},{"last_affected":"11.6.17"},{"introduced":"12.0.0"},{"last_affected":"12.2.11"},{"introduced":"12.3.0"},{"last_affected":"12.3.11"},{"introduced":"12.4.0"},{"last_affected":"12.4.9"},{"introduced":"13.0.0"},{"last_affected":"13.0.7"},{"introduced":"13.1.0"},{"last_affected":"13.1.4"},{"introduced":"13.2.0"},{"last_affected":"13.2.0"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"GRAFANA","cwe_ids":["CWE-1023","CWE-290","CWE-863"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/14xxx/CVE-2026-14199.json"},{"type":"ADVISORY","url":"https://grafana.com/security/security-advisories/cve-2026-14199"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-14199"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/grafana/grafana","events":[{"introduced":"0"},{"fixed":"277ef258d4b9a5acdf2932347c6a4ca72d739b28"},{"introduced":"81407c71e96e8351b4600164c1b4d30c8baf41d6"},{"fixed":"e9de482b5110e6e7310a18274c53a0d7d0eee6af"},{"introduced":"00656f0044f585bbce05b59d4429cdfa43fa34d3"},{"fixed":"b309c9bb3b81a748c3a75289236a27309ed2566a"},{"introduced":"3f02f9bd21247756f3ddbdf0a0cb4393fd3149b1"},{"fixed":"f681b1359f6a0b8ecb9f2c49a88ac72b75bde73b"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"11.0.0"},{"introduced":"12.4.10"},{"fixed":"13.0.0"},{"introduced":"13.0.8"},{"fixed":"13.1.0"},{"introduced":"13.1.5"},{"fixed":"13.2.0"}]}}],"versions":["pkg/promlib/v0.0.11","pkg/promlib/v0.0.10","pkg/promlib/v0.0.9","pkg/promlib/v0.0.8","pkg/promlib/v0.0.7","pkg/promlib/v0.0.6","pkg/promlib/v0.0.5","pkg/promlib/v0.0.4","pkg/promlib/v0.0.3","pkg/promlib/v0.0.2","pkg/promlib/v0.0.1","pkg/util/xorm/v0.0.1","v0.0.1-test","v10.0.0-preview","v0.0.0-cloud","v3.2.1-test","v8.5.16","v9.3.0-beta1","v8.4.0-beta1","v8.3.3","v6.5","v6.0.0-beta1","v5.,2.4","v5.0.0","v5.0.0-beta5","v5.0.0-beta4","v5.0.0-beta3","v5.0.0-beta2","v5.0.0-beta1","v4.6.0-beta1","v4.5.0","v4.5.0-beta1","v4.4.0","v3.1.0-beta1","v3.0.2","v3.0.1","v3.0.0-beta7","v3.0.0-beta6","v2.6.0","v2.6.0-beta1","v2.5.0","v2.0.2","v2.0.1","v2.0.0-beta3","v2.0.0-beta1","v1.9.1","v1.9.0","v1.9.0-rc1","v1.7.0-rc1","v1.6.1","v1.6.0","v1.5.4","v1.5.3","v1.5.2","v1.5.1","v1.5.0","v1.4.0","v1.3.0","v1.2.0","v1.1.0","v1.0.4","v1.0.3","v1.0.2","v1.0.1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-14199.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L"}]}