{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-3343","assignerOrgId":"5d1c2695-1a31-4499-88ae-e847036fd7e3","state":"PUBLISHED","assignerShortName":"WatchGuard","dateReserved":"2026-02-27T15:37:10.115Z","datePublished":"2026-03-03T13:17:48.810Z","dateUpdated":"2026-08-10T16:27:58.515Z"},"containers":{"cna":{"providerMetadata":{"orgId":"5d1c2695-1a31-4499-88ae-e847036fd7e3","shortName":"WatchGuard","dateUpdated":"2026-08-10T16:27:58.515Z"},"title":"WatchGuard Firebox Reflected Cross-Site-Scripting (XSS) Vulnerability in Fireware Web UI","descriptions":[{"lang":"en","value":"A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link."}],"affected":[{"vendor":"WatchGuard","product":"Fireware OS","versions":[{"status":"affected","version":"2025.1","versionType":"custom","lessThan":"2026.1.2"},{"status":"affected","version":"12.7","versionType":"custom","lessThan":"12.11.8"}],"defaultStatus":"unaffected","platforms":["Default"]}],"references":[{"url":"https://psirt.watchguard.com/CVE-2026-3343","tags":["vendor-advisory"]},{"url":"https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00004"}],"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*","versionStartIncluding":"2025.1","versionEndExcluding":"2026.1.2"},{"vulnerable":true,"criteria":"cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*","versionStartIncluding":"12.7","versionEndExcluding":"12.11.8"}]}]}],"metrics":[{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","baseScore":5.1,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-79","type":"CWE","cweId":"CWE-79"}]}],"credits":[{"lang":"en","value":"btaol","type":"finder"}],"solutions":[{"lang":"en","value":"Fireware OS 2026.1.2, Fireware OS 12.11.8"}],"exploits":[{"lang":"en","value":"WatchGuard is not aware of any exploitation of this issue in the wild."}],"datePublic":"2026-03-03T13:17:48.810Z"},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-03T14:44:26.500886Z","id":"CVE-2026-3343","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-03T14:45:43.348Z"}}]}}