{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-12734","assignerOrgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","state":"PUBLISHED","assignerShortName":"GitLab","dateReserved":"2025-11-04T22:33:43.047Z","datePublished":"2025-12-11T07:32:01.735Z","dateUpdated":"2025-12-16T23:44:05.510Z"},"containers":{"cna":{"affected":[{"cpes":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","product":"GitLab","repo":"git://git@gitlab.com:gitlab-org/gitlab.git","vendor":"GitLab","versions":[{"lessThan":"18.4.6","status":"affected","version":"15.6","versionType":"semver"},{"lessThan":"18.5.4","status":"affected","version":"18.5","versionType":"semver"},{"lessThan":"18.6.2","status":"affected","version":"18.6","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Thanks [joaxcar](https://hackerone.com/joaxcar) for reporting this vulnerability through our HackerOne bug bounty program"}],"descriptions":[{"lang":"en","value":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.6 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to, under certain conditions, render content in dialogs to other users by injecting malicious HTML content into merge request titles."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.5,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-116","description":"CWE-116: Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","shortName":"GitLab","dateUpdated":"2025-12-16T23:44:05.510Z"},"references":[{"name":"GitLab Issue #579573","tags":["issue-tracking","permissions-required"],"url":"https://gitlab.com/gitlab-org/gitlab/-/issues/579573"},{"name":"HackerOne Bug Bounty Report #3379381","tags":["technical-description","exploit","permissions-required"],"url":"https://hackerone.com/reports/3379381"},{"url":"https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/"}],"solutions":[{"lang":"en","value":"Upgrade to versions 18.4.6, 18.5.4, 18.6.2 or above."}],"title":"Improper Encoding or Escaping of Output in GitLab"},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-12-11T14:42:27.723320Z","id":"CVE-2025-12734","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":"2025-12-11T14:42:33.688Z"}}]}}