Microsoft · Prometheus through 3.15.1 Credential Leak via remote_write Cross-Host Redirects
Affects MicrosoftSource GCVE Database
Not known to be exploited · CVSS 6.3 Medium · patch available : update Microsoft when convenient.
Data as of 5 Nov 2026, 09:07 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 6.3 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 4.8 |
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 30 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| prometheusprometheus | Affected
| Fixed in– |
GitHubprometheuspkg:github/prometheusOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, users should review and restrict remote_write configurations to trusted hosts and monitor for unusual redirect behavior.
Description
CVE-2026-119566 is a vulnerability in Prometheus up to version 3.15.1 involving credential leakage via remote_write cross-host redirects. The issue relates to improper handling of remote_write requests that can lead to exposure of sensitive credentials. The affected version explicitly stated is 3.0. No CVSS score or detailed impact metrics are provided.