CVE-2026-27878— Tempo TraceQL query with exemplar hint could result in unbounded memory usage
Possible ATT&CK Techniques 1AI
T1499 · Endpoint Denial of ServiceAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Grafana | Enterprise Traces (GET) | 2.6.1< 2.8.8 | affected |
| Grafana | Tempo | 2.6.0< 2.10.2 | affected |
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-27878
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Tempo TraceQL query with exemplar hint could result in unbounded memory usage
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Grafana Tempo 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grafana tempo是Grafana公司开源的一个分布式追踪后端服务。 Grafana Tempo 2.8.8之前版本和Grafana Tempo 2.10.2之前版本存在安全漏洞，该漏洞源于TraceQL查询中大量exemplars hint值导致内存分配过多，可能允许已认证用户触发拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Grafana | Enterprise Traces (GET) | 2.6.1 ~ 2.8.8 | - | |
| Grafana | Tempo | 2.6.0 ~ 2.10.2 | - |
II. Public POCs for CVE-2026-27878
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-27878
请登录查看更多情报信息。
Vendor Advisories for CVE-2026-27878 (1)
- 🔗 404 Page not found | Grafana Labsvendor-advisory
IV. Related Vulnerabilities
V. Comments for CVE-2026-27878
No comments yet