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CVE-2026-119566VulnerabilityPublished Updated

Golang github prometheus common: Prometheus through 3.15.1 contains a credential leak vulnerability that allows

Affects golang-github-prometheus-commonSource GCVE Database

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Authoritative record:CVE-2026-119566· Medium 6.3

Not known to be exploited · CVSS 6.3 Medium.

Data as of 5 Nov 2026, 12:35 UTC

CVSS 4.0 base score
6.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.06.3
CNA (VulnCheck)CVSS 3.14.8
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.04 LTSgolang-github-prometheus-commonpkg:deb/ubuntu/golang-github-prometheus-common?arch=source&distro=resoluteOther threatsAffected
  • =0.62.0-3
  • =0.67.4-1
Fixed in–
Ubuntu 24.04 LTSgolang-github-prometheus-commonpkg:deb/ubuntu/golang-github-prometheus-common?arch=source&distro=nobleOther threatsAffected
  • 0.44.0-4 – 0.47.0-2
4 affected builds
Fixed in–
Ubuntu 22.04 LTSgolang-github-prometheus-commonpkg:deb/ubuntu/golang-github-prometheus-common?arch=source&distro=jammyOther threatsAffected
  • =0.15.0-2ubuntu1
  • =0.32.1-5
  • =0.32.1-5ubuntu1
Fixed in–
Ubuntu 20.04 LTSgolang-github-prometheus-commonpkg:deb/ubuntu/golang-github-prometheus-common?arch=source&distro=focalOther threatsAffected
  • =0+git20181119.b36ad28-2
  • =0.7.0-1
Fixed in–
Ubuntu 18.04 LTSgolang-github-prometheus-commonpkg:deb/ubuntu/golang-github-prometheus-common?arch=source&distro=bionicOther threatsAffected
  • =0+git20170707.3e6a763-1
  • =0+git20171117.2e54d0b-1
  • =0+git20180110.89604d1-1
Fixed in–
Ubuntu 16.04 LTSgolang-github-prometheus-commonpkg:deb/ubuntu/golang-github-prometheus-common?arch=source&distro=xenialOther threatsAffected
  • =0+git20160104.0a3005b-1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

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.

References

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