CVE-2026-27878GHSA-6XFF-CPCQ-VPW2GO-2026-6325
Tempo TraceQL query with exemplar hint could result in unbounded memory usage
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.8.8, 2.10.2, 1.5.1-0.20260303204923-b13f74291d48
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Grafana Enterprise Traces (GET)
From 2.6.1 · fixed in 2.8.8
- Grafana Tempo
From 2.6.0 · fixed in 2.10.2
- github.com/grafana/tempoGo
fixed in 1.5.1-0.20260303204923-b13f74291d48