CVE-2026-119566
Prometheus through 3.15.1 contains a credential leak vulnerability that allows attackers to capture…
- Risk score
- 41/100
- CVSS
- 4.8 v3.1
- Exploit chance (30 days)
- 0.2%
- Published
- 30 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 4.8 medium
- On your watchlist: azure
References
- 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-redirects
Original 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.
Last activity 30 Oct 2026. Patch Forecast updates every hour.