CVE-2026-119566 (GCVE-0-2026-119566)
Vulnerability from cvelistv5 – Published: 2026-10-30 11:31 – Updated: 2026-11-04 22:20
VLAI
EPSS
VEX
Title
Prometheus through 3.15.1 Credential Leak via remote_write Cross-Host Redirects
Summary
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.
Severity
4.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 22:20 UTC
CWE
- CWE-522 - Insufficiently Protected Credentials
Assigner
VulnCheck
CNA
References
6 references
| URL | Tags |
|---|---|
| https://github.com/prometheus/prometheus/blob/v3.… | technical-description |
| https://github.com/prometheus/prometheus/blob/v3.… | technical-description |
| https://github.com/prometheus/common/pull/901 | relatedpatchissue-tracking |
| https://abraxaslabs.tech/research/prometheus-bear… | third-party-advisory |
| https://github.com/prometheus/prometheus | product |
| https://www.vulncheck.com/advisories/prometheus-t… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| prometheus | prometheus |
Affected:
0 , ≤ 3.15.1
(semver)
cpe:2.3:a:prometheus:prometheus:*:*:*:*:*:*:*:* |
Date Public
2026-10-12 00:00
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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