{"schema":"threatline.record/2","record":{"id":"CVE-2026-88858","aliases":[],"summary":"Server-side expression parser denial of service","details":"A user with the Viewer role in Grafana can crash the server by submitting a crafted server-side math expression (uncontrolled recursion). A user with permission to provision alert rules can make the outage persist across restarts.","categories":["Applications & CMS"],"product":"Grafana OSS","vendor":"Grafana","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88858","source_modified_at":"2026-10-28T16:50:17.291Z","fetched_at":"2026-10-28T20:58:01.013507Z","product":"Grafana OSS","vendor":"Grafana","versions":[{"lessThanOrEqual":"11.6.16","status":"affected","version":"7.4.0","versionType":"semver"},{"lessThanOrEqual":"12.2.10","status":"affected","version":"12.0.0","versionType":"semver"},{"lessThanOrEqual":"12.3.11","status":"affected","version":"12.3.0","versionType":"semver"},{"lessThanOrEqual":"12.4.13","status":"affected","version":"12.4.0","versionType":"semver"},{"lessThanOrEqual":"13.0.11","status":"affected","version":"13.0.0","versionType":"semver"},{"lessThanOrEqual":"13.1.8","status":"affected","version":"13.1.0","versionType":"semver"},{"lessThanOrEqual":"13.2.4","status":"affected","version":"13.2.0","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88858","source_modified_at":"2026-10-28T16:50:17.291Z","fetched_at":"2026-10-28T20:58:01.013507Z","product":"Grafana Enterprise","vendor":"Grafana","versions":[{"lessThanOrEqual":"11.6.16","status":"affected","version":"7.4.0","versionType":"semver"},{"lessThanOrEqual":"12.2.10","status":"affected","version":"12.0.0","versionType":"semver"},{"lessThanOrEqual":"12.3.11","status":"affected","version":"12.3.0","versionType":"semver"},{"lessThanOrEqual":"12.4.13","status":"affected","version":"12.4.0","versionType":"semver"},{"lessThanOrEqual":"13.0.11","status":"affected","version":"13.0.0","versionType":"semver"},{"lessThanOrEqual":"13.1.8","status":"affected","version":"13.1.0","versionType":"semver"},{"lessThanOrEqual":"13.2.4","status":"affected","version":"13.2.0","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.5,"severity":"Medium","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-28T16:50:17.291Z","modified_at":"2026-10-28T16:50:17.291Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-88858","fetched_at":"2026-10-28T20:58:01.013507Z","source_modified_at":"2026-10-28T16:50:17.291Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://grafana.com/security/security-advisories/cve-2026-88858","tags":["vendor-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-28T16:50:17.291Z","content_hash":"45b6c939e579d05673e130b182d3450a27816b8927164462a9a56304b5102320"}}