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4 vulnerabilities found for loki by grafana
CVE-2026-21726 (GCVE-0-2026-21726)
Vulnerability from nvd – Published: 2026-04-15 19:24 – Updated: 2026-06-22 16:31
VLAI
Title
Loki Path Traversal - CVE-2021-36156 Bypass
Summary
The CVE-2021-36156 fix validates the namespace parameter for path traversal sequences after a single URL decode, by double encoding, an attacker can read files at the Ruler API endpoint /loki/api/v1/rules/{namespace}
Thanks to Prasanth Sundararajan for reporting this vulnerability.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://grafana.com/security/security-advisories/… | vendor-advisory |
Date Public
2026-04-15 19:20
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CVE-2021-36156 (GCVE-0-2021-36156)
Vulnerability from nvd – Published: 2021-08-03 14:12 – Updated: 2024-08-04 00:47
VLAI
Summary
An issue was discovered in Grafana Loki through 2.2.1. The header value X-Scope-OrgID is used to construct file paths for rules files, and if crafted to conduct directory traversal such as ae ../../sensitive/path/in/deployment pathname, then Loki will attempt to parse a rules file at that location and include some of the contents in the error message.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/grafana/loki/pull/4020#issue-6… | x_refsource_MISC |
| https://github.com/grafana/loki/releases/tag/v2.3.0 | x_refsource_MISC |
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CVE-2026-21726 (GCVE-0-2026-21726)
Vulnerability from cvelistv5 – Published: 2026-04-15 19:24 – Updated: 2026-06-22 16:31
VLAI
Title
Loki Path Traversal - CVE-2021-36156 Bypass
Summary
The CVE-2021-36156 fix validates the namespace parameter for path traversal sequences after a single URL decode, by double encoding, an attacker can read files at the Ruler API endpoint /loki/api/v1/rules/{namespace}
Thanks to Prasanth Sundararajan for reporting this vulnerability.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://grafana.com/security/security-advisories/… | vendor-advisory |
Date Public
2026-04-15 19:20
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CVE-2021-36156 (GCVE-0-2021-36156)
Vulnerability from cvelistv5 – Published: 2021-08-03 14:12 – Updated: 2024-08-04 00:47
VLAI
Summary
An issue was discovered in Grafana Loki through 2.2.1. The header value X-Scope-OrgID is used to construct file paths for rules files, and if crafted to conduct directory traversal such as ae ../../sensitive/path/in/deployment pathname, then Loki will attempt to parse a rules file at that location and include some of the contents in the error message.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/grafana/loki/pull/4020#issue-6… | x_refsource_MISC |
| https://github.com/grafana/loki/releases/tag/v2.3.0 | x_refsource_MISC |
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