CVE-2026-21729
HIGHCVSS 7.5/10EPSS 0.26%
Last modified
CVE-2026-21729 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Loki queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
Loki queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Grafana | Loki | >= v3.0.0, < v3.7.0 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-21729?
Loki queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy.
How severe is CVE-2026-21729?
CVE-2026-21729 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.
How do I fix CVE-2026-21729?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-21729?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST