CVE-2026-27878
6.5 · MEDIUMOverview
CVE-2026-27878 is a medium-severity vulnerability affecting grafana tempo. It was published on June 19, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from grafana. Update tempo to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| grafana | tempo | >= 2.6.0, < 2.8.4 | Affected |
Frequently Asked Questions
What is CVE-2026-27878?
CVE-2026-27878 is a medium-severity vulnerability affecting grafana tempo. It was published on June 19, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).
How severe is CVE-2026-27878?
This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-27878?
Check the references section for vendor advisories and patches from grafana. Update tempo to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-27878?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-27878 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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