CVE-2026-119566Prometheus through 3.15.1 Credential Leak via remote_write Cross-Host Redirects

Beschreibung

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.

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

Referenzen und Patches

• https://github.com/prometheus/prometheus/blob/v3.15.1/storage/remote/azuread/azuread.go#L326-L333 technical-description
• https://github.com/prometheus/prometheus/blob/v3.15.1/storage/remote/client.go#L205-L216 technical-description
• https://github.com/prometheus/common/pull/901 relatedpatchissue-tracking
• https://abraxaslabs.tech/research/prometheus-bearer-redirect third-party-advisory
• https://github.com/prometheus/prometheus product
• VulnCheck Advisory: Prometheus through 3.15.1 Credential Leak via remote_write Cross-Host Redirects third-party-advisory