[NEW] [medium] Grafana Loki: Vulnerability allows Denial of Service
A remote, anonymous attacker can exploit a vulnerability in Grafana Loki to carry out a Denial of Service attack.
CSIRTS triage
- What
- A vulnerability allows a remote, anonymous attacker to carry out a Denial of Service attack.
- Who is affected
- Deployments of Grafana Loki.
- Urgency
- Remediation is medium due to the potential for service disruption.
- Action
- Update Grafana Loki to the latest version.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2391
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-217290.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 18% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-21729 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
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