PatchTheCVECVE-2026-21729: Loki queries with large limits can cause large memory allocations which can impact the availability of the ser
CVE-2026-21729 is a high-severity flaw (CVSS 7.5) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Loki queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 61%) |
| CISA exploited list | No |
| Weakness | CWE-770 |
| Published | 2026-07-16 |
| Last modified | 2026-10-24 |
Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-21729?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-21729 being exploited?
CVE-2026-21729 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-21729 affect?
CVE-2026-21729 affects affected software. Severity is high (CVSS 7.5). Loki queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy.
How urgent is CVE-2026-21729?
Priority 41/100. High severity; Remotely exploitable, no login, no user action