{"id":"CVE-2026-119566","aliases":["AZL-112688","DEBIAN-CVE-2026-119566","EUVD-2026-113831","GHSA-597x-6fqq-75wr","UBUNTU-CVE-2026-119566"],"status":"published","title":"Prometheus through 3.15.1 Credential Leak via remote_write Cross-Host Redirects","description":"Prometheus through 3.15.1 contains a credential leak vulnerability that allows attackers to capture Azure AD or Google IAM bearer tokens by redirecting remote_write requests to another host. Attackers controlling the remote-write endpoint or a redirecting server can return a 3xx to their host and replay the token, for example to write metrics to the victim's backend.","severity":{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00201,"percentile":0.10083,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-522"],"published":"2026-10-30T11:31:13Z","modified":"2026-11-05T14:16:13Z","fixes":[{"ecosystem":"Debian:14","package":"golang-github-prometheus-common","fixed_in":["0.69.0-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"telegraf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.31.0-36"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"golang-github-prometheus-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.39.0-2","0.42.0-1","0.42.0-2","0.44.0-1","0.44.0-2","0.44.0-3","0.44.0-4","0.45.0-1","0.45.0-2","0.45.0-3","0.46.0-1","0.47.0-1","0.47.0-2","0.48.0-1","0.49.0-1","0.50.0-1","0.51.0-1","0.52.2-1","0.53.0-1","0.55.0-1","0.55.0-2","0.57.0-1","0.59.1-1","0.59.1-2","0.60.0-1","0.60.1-1","0.61.0-1","0.62.0-1","0.62.0-2","0.62.0-3","0.63.0-1","0.63.0-2","0.65.0-1","0.67.4-1","0.67.5-1","0.68.1-1","0.69.0-1"]},{"source":"osv","ecosystem":"Debian:13","package":"golang-github-prometheus-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.62.0-3","0.63.0-1","0.63.0-2","0.65.0-1","0.67.4-1","0.67.5-1","0.68.1-1","0.69.0-1"]},{"source":"osv","ecosystem":"Debian:14","package":"golang-github-prometheus-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.69.0-1"}]}],"versions":["0.62.0-3","0.63.0-1","0.63.0-2","0.65.0-1","0.67.4-1","0.67.5-1","0.68.1-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"golang-github-prometheus-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0+git20160104.0a3005b-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"golang-github-prometheus-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0+git20170707.3e6a763-1","0+git20171117.2e54d0b-1","0+git20180110.89604d1-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"golang-github-prometheus-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0+git20181119.b36ad28-2","0.7.0-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"golang-github-prometheus-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.15.0-2ubuntu1","0.32.1-5","0.32.1-5ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"golang-github-prometheus-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.44.0-4","0.45.0-3","0.46.0-1","0.47.0-2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"golang-github-prometheus-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.62.0-3","0.67.4-1"]}],"products":[{"vendor":"prometheus","product":"prometheus"}],"references":[{"url":"https://github.com/prometheus/prometheus/blob/v3.15.1/storage/remote/azuread/azuread.go#L326-L333","tags":["technical-description","article","report"]},{"url":"https://github.com/prometheus/prometheus/blob/v3.15.1/storage/remote/client.go#L205-L216","tags":["technical-description","article","report"]},{"url":"https://github.com/prometheus/common/pull/901","tags":["related","patch","issue-tracking","fix","report"]},{"url":"https://abraxaslabs.tech/research/prometheus-bearer-redirect","tags":["third-party-advisory","advisory","report"]},{"url":"https://github.com/prometheus/prometheus","tags":["product","package","report"]},{"url":"https://www.vulncheck.com/advisories/prometheus-through-3.15.1-credential-leak-via-remote-write-cross-host-redirects","tags":["third-party-advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119566","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-597x-6fqq-75wr"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119566.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-119566","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-119566","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-119566","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-119566","title":"Prometheus through 3.15.1 Credential Leak via remote_write Cross-Host Redirects","description":"Prometheus through 3.15.1 contains a credential leak vulnerability that allows attackers to capture Azure AD or Google IAM bearer tokens by redirecting remote_write requests to another host. 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Attackers controlling the remote-write endpoint or a redirecting server can return a 3xx to their host and replay the token, for example to write metrics to the victim's backend.","status":"published","published":"2026-10-30T11:31:13Z","modified":"2026-11-04T22:20:14Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-04T23:47:18.620008Z"}],"ghsa":[{"id":"GHSA-597x-6fqq-75wr","title":"Prometheus through 3.15.1 contains a credential leak vulnerability that allows attackers to...","description":"Prometheus through 3.15.1 contains a credential leak vulnerability that allows attackers to capture Azure AD or Google IAM bearer tokens by redirecting remote_write requests to another host. Attackers controlling the remote-write endpoint or a redirecting server can return a 3xx to their host and replay the token, for example to write metrics to the victim's backend.","status":"published","published":"2026-10-30T12:31:22Z","modified":"2026-10-30T12:31:39Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/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","level":"medium"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-522"],"updated_at":"2026-11-02T15:14:42.307242Z"}],"nvd":[{"id":"CVE-2026-119566","description":"Prometheus through 3.15.1 contains a credential leak vulnerability that allows attackers to capture Azure AD or Google IAM bearer tokens by redirecting remote_write requests to another host. 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Attackers controlling the remote-write endpoint or a redirecting server can return a 3xx to their host and replay the token, for example to write metrics to the victim's backend.","status":"published","published":"2026-10-30T12:16:44Z","modified":"2026-11-05T14:16:13.9399049Z","updated_at":"2026-11-05T16:41:19.001909Z"}]}}