Vulnerability · Published Jun 22, 2026 · Assigned by GRAFANA
CVE-2026-42129Path traversal in the Loki data source plugin
High 7.7
In plain English
A high-severity path traversal in Grafana OSS from Grafana. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.7High
Exploit odds (30 days)0.4%top 61.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A user with Viewer permissions can use a path traversal in the Loki data source plugin to reach administrative Loki endpoints and read sensitive backend configuration and internal service information.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | grafana | 12.4.4-r0 | ALPINE-CVE-2026-42129 |
| Go | github.com/grafana/grafana | no fix listed | GHSA-f74p-cwhp-x2wx |
| Go | github.com/grafana/grafana | no fix listed | GHSA-f74p-cwhp-x2wx |
| Go | github.com/grafana/grafana | no fix listed | GHSA-f74p-cwhp-x2wx |
| Go | github.com/grafana/grafana | no fix listed | GHSA-f74p-cwhp-x2wx |
| Go | github.com/grafana/grafana | no fix listed | GHSA-f74p-cwhp-x2wx |
| Go | github.com/grafana/grafana | 1.9.2-0.20260616075434-82ef13993059 | GHSA-f74p-cwhp-x2wx |
| Go | github.com/grafana/grafana | no fix listed | GO-2026-6544 |
| Go | github.com/grafana/grafana | no fix listed | GO-2026-6544 |
| Go | github.com/grafana/grafana | no fix listed | GO-2026-6544 |
| Go | github.com/grafana/grafana | no fix listed | GO-2026-6544 |
| Go | github.com/grafana/grafana | no fix listed | GO-2026-6544 |
| Go | github.com/grafana/grafana | no fix listed | GO-2026-6544 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Grafana | Grafana OSS | 11.6.0 – through 11.6.1412.2.0 – through 12.2.812.3.0 – through 12.3.612.4.0 – through 12.4.313.0.0 – through 13.0.1 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
References
- https://grafana.com/security/security-advisories/cve-2026-42129 vendor-advisory