CVE-2026-21729 — HIGH (7.5)

Vulnerability Description

Loki queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-770

References

https://grafana.com/security/security-advisories/cve-2026-21729

FAQ

What is CVE-2026-21729?

CVE-2026-21729 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-21729?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.