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CVE-2026-21726

🗓️ 15 Apr 2026 19:24:31Reported by GRAFANAType 
cve
 cve
🔗 web.nvd.nist.gov👁 110 Views🌐 WEB

CVE-2026-21726 enables Loki path traversal via double encoding after a single URL decode.

Related
Detection
Affected
Refs
Paths
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2021-36156
3 Aug 202115:15
–attackerkb
attackerkb
attackerkb
CVE-2026-21726
15 Apr 202619:24
–attackerkb
alpinelinux
AlpineLinux
CVE-2026-21726
15 Apr 202619:24
–alpinelinux
archlinux
ArchLinux
[ASA-202108-12] loki: directory traversal
10 Aug 202100:00
–archlinux
bdu_fstec
BDU FSTEC
Loki Log API Unauthorized Access
20 Feb 202600:00
–bdu_fstec
cgr
Chainguard
CVE-2026-21726 vulnerabilities
18 Apr 202601:17
–cgr
circl
Circl
CVE-2021-36156
3 Aug 202118:27
–circl
cnnvd
CNNVD
Grafana path traversal vulnerability
3 Aug 202100:00
–cnnvd
cnnvd
CNNVD
Grafana Loki security vulnerabilities
15 Apr 202600:00
–cnnvd
cve
CVE
CVE-2021-36156
3 Aug 202114:12
–cve
Rows per page
NVD
Node
grafanalokiRange<3.6.4
[
  {
    "vendor": "Grafana",
    "product": "Loki",
    "defaultStatus": "unaffected",
    "versions": [
      {
        "version": "2.3.0",
        "status": "affected",
        "versionType": "semver",
        "lessThan": "3.5.9"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
{namespace}path/loki/api/v1/rules/{namespace}Path traversal vulnerability in the Ruler API endpoint where double-encoded path traversal sequences in the namespace parameter can be used to read arbitrary files.CWE-22

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27 Aug 2026 17:22Current
6.6Medium risk
Vulners AI Score6.6
CVSS 3.15.3
EPSS0.01477
SSVC
110