CVE-2026-42154
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
7.5
Description
Prometheus: Remote read endpoint allows denial of service via crafted snappy payload
Predictions
Exploit likelihood
83%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | affected | |
| debian | sid | affected | |
| debian | trixie | affected | |
| windows | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/prometheus/prometheus | <0.311.3 | 0.311.3 |
| GO | github.com/prometheus/prometheus | < 0.311.3 | 0.311.3 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| prometheus | prometheus | {"endExcluding":"3.5.3"} | 3.5.3 |
References
- https://github.com/prometheus/prometheus/pull/18584
- https://github.com/prometheus/prometheus/pull/18585
- https://github.com/prometheus/prometheus/releases/tag/v3.11.3
- https://github.com/prometheus/prometheus/releases/tag/v3.5.3
- https://github.com/prometheus/prometheus/security/advisories/GHSA-8rm2-7qqf-34qm
- https://nvd.nist.gov/vuln/detail/CVE-2026-42154
- https://github.com/prometheus/prometheus
- https://www.suse.com/security/cve/CVE-2026-42154.html
- https://security-tracker.debian.org/tracker/CVE-2026-42154
- https://github.com/advisories/GHSA-8rm2-7qqf-34qm
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42154
CWEs
CWE-400 CWE-789
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.