{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-119566","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-10-30T10:53:31.951Z","datePublished":"2026-10-30T11:31:13.086Z","dateUpdated":"2026-10-30T11:31:13.086Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-10-30T11:31:13.086Z"},"datePublic":"2026-10-12T00:00:00.000Z","title":"Prometheus through 3.15.1 Credential Leak via remote_write Cross-Host Redirects","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Insufficiently Protected Credentials","cweId":"CWE-522","type":"CWE"}]}],"affected":[{"vendor":"prometheus","product":"prometheus","packageURL":"pkg:github/prometheus/prometheus","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"3.15.1","status":"affected","versionType":"semver"}],"repo":"https://github.com/prometheus/prometheus"}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:prometheus:prometheus:*:*:*:*:*:*:*:*","versionEndIncluding":"3.15.1"}]}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/prometheus/prometheus/blob/v3.15.1/storage/remote/azuread/azuread.go#L326-L333","tags":["technical-description"]},{"url":"https://github.com/prometheus/prometheus/blob/v3.15.1/storage/remote/client.go#L205-L216","tags":["technical-description"]},{"url":"https://github.com/prometheus/common/pull/901","tags":["related","patch","issue-tracking"]},{"url":"https://abraxaslabs.tech/research/prometheus-bearer-redirect","tags":["third-party-advisory"]},{"url":"https://github.com/prometheus/prometheus","tags":["product"]},{"name":"VulnCheck Advisory: Prometheus through 3.15.1 Credential Leak via remote_write Cross-Host Redirects","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/prometheus-through-3.15.1-credential-leak-via-remote-write-cross-host-redirects"}],"credits":[{"lang":"en","value":"Abraxas Labs","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}