CVE-2026-27878

Name: CVE-2026-27878
Creator: NVD / NIST
Published: 2026-06-19T19:16:34.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.24%

Last modified Jun 23, 2026

This CVE is reserved or awaiting analysis. Details will appear once published by NVD.

Description

A TraceQL query in Grafana Tempo with a large exemplars hint value can cause the Tempo instance to allocate an excessive amount of memory, resulting in an out-of-memory crash. This could allow an authenticated user to trigger a denial of service against the Tempo service.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.24%

14.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

References

https://grafana.com/security/security-advisories/cve-2026-27878

Timeline

Published: Jun 19, 2026
Last Modified: Jun 23, 2026
Status: Awaiting Analysis

Are you affected by CVE-2026-27878?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST