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Early warnings
SZB-7b0ac42a1e

EUVD lists Prometheus remote_write credential leak (EUVD-2026-113831)

Status
Unverified: only social posts report this so far
Kind
Vulnerability
Vendor
Prometheus
Product
Prometheus
First seen

Summary

The EU Vulnerability Database (EUVD) lists a credential leak vulnerability in Prometheus through 3.15.1, scored 6.3/10 under CVSS v3.1. According to the listing, attackers controlling the remote-write endpoint or a redirect can capture Azure AD or Google IAM bearer tokens.

If you use Prometheus

Check whether any Prometheus deployment runs version 3.15.1 or earlier

Upgrade Prometheus to a release that the vendor marks as fixed

Rotate any Azure AD or Google IAM tokens used by remote_write configurations

Restrict remote_write destinations to trusted endpoints

What the sources say 1

· Mastodon: “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.” Source