CVE tracker
CVE-2026-119566
CVE-2026-119566Medium 6.3
Research and translation in progress – available shortly.
Original description (NVD)
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.
NVD references (6)
- https://abraxaslabs.tech/research/prometheus-bearer-redirect
- https://github.com/prometheus/common/pull/901
- https://github.com/prometheus/prometheus
- https://github.com/prometheus/prometheus/blob/v3.15.1/storage/remote/azuread/azuread.go#L326-L333
- https://github.com/prometheus/prometheus/blob/v3.15.1/storage/remote/client.go#L205-L216
- https://www.vulncheck.com/advisories/prometheus-through-3.15.1-credential-leak-via-remote-write-cross-host-re…
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Data: NVD (NIST), CISA KEV, FIRST EPSS – updated continuously.