{"id":"CVE-2026-42129","aliases":["GO-2026-6544"],"url":"https://o3.security/vulnerability/CVE-2026-42129","summary":"Grafana Loki datasource plugin's callResource handler contains a path traversal vulnerability.","details":"The Loki datasource plugin's callResource handler contains a path traversal vulnerability. An authenticated Viewer-role user can escape the plugin's resource sandbox and access administrative Loki endpoints (e.g. /config, /services, /ready) to extract sensitive backend configuration and internal service information.","published":"2026-06-22T15:30:43Z","modified":"2026-09-28T17:10:47.137426029Z","cvss":{"score":7.7,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/grafana/grafana","fixedVersion":null},{"ecosystem":"Go","name":"github.com/grafana/grafana","fixedVersion":null},{"ecosystem":"Go","name":"github.com/grafana/grafana","fixedVersion":null},{"ecosystem":"Go","name":"github.com/grafana/grafana","fixedVersion":null},{"ecosystem":"Go","name":"github.com/grafana/grafana","fixedVersion":null},{"ecosystem":"Go","name":"github.com/grafana/grafana","fixedVersion":"1.9.2-0.20260616075434-82ef13993059"}],"fix":{"url":"https://github.com/grafana/grafana/commit/3fcdbc5a6e5c955bd42bd3715dd03cbad2b078c1","label":"grafana/grafana@3fcdbc5"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42129"},{"type":"WEB","url":"https://github.com/grafana/grafana/commit/3fcdbc5a6e5c955bd42bd3715dd03cbad2b078c1"},{"type":"WEB","url":"https://github.com/grafana/grafana/commit/42cdc39124912a8506a0c613c319c345aa950b29"},{"type":"WEB","url":"https://github.com/grafana/grafana/commit/82ef13993059351bf21de35b8488bbd9b42df4f4"},{"type":"WEB","url":"https://github.com/grafana/grafana/commit/d27d2eba9c509d16f214d290436a6ad0bd9c6c01"},{"type":"WEB","url":"https://github.com/grafana/grafana/commit/dd5dc51681ff0133ddb2e206c2ea318713aeca16"},{"type":"WEB","url":"https://github.com/grafana/grafana/commit/eeb08ceb020c4381242d8400e5878044e9877505"},{"type":"WEB","url":"https://github.com/grafana/grafana/commit/f70d3e480274a5dbd12006338c393f4b05d441ca"},{"type":"PACKAGE","url":"https://github.com/grafana/grafana"},{"type":"WEB","url":"https://github.com/grafana/grafana/releases/tag/v11.6.15"},{"type":"WEB","url":"https://github.com/grafana/grafana/releases/tag/v12.2.9"},{"type":"WEB","url":"https://github.com/grafana/grafana/releases/tag/v12.3.7"},{"type":"WEB","url":"https://github.com/grafana/grafana/releases/tag/v12.4.4"},{"type":"WEB","url":"https://github.com/grafana/grafana/releases/tag/v13.0.2"},{"type":"WEB","url":"https://grafana.com/security/security-advisories/cve-2026-42129"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-28T17:10:47.137426029Z"}}