{"id":"CVE-2026-3093","state":"PUBLISHED","title":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab","description":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 14.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an attacker to execute arbitrary JavaScript in another user's browser via a crafted URL, due to improper sanitization of user-controlled input.","publishedAt":"2026-07-29T19:02:11.038Z","updatedAt":"2026-07-29T19:34:59.534Z","severity":{"score":4.7,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","source":"GitLab"},"assigner":"GitLab","products":["GitLab GitLab"],"affected":[{"vendor":"GitLab","product":"GitLab","defaultStatus":"unaffected","versions":[{"version":"14.0","status":"affected","lessThan":"19.0.5","versionType":"semver"},{"version":"19.1","status":"affected","lessThan":"19.1.3","versionType":"semver"},{"version":"19.2","status":"affected","lessThan":"19.2.1","versionType":"semver"}],"repo":"git://git@gitlab.com:gitlab-org/gitlab.git","cpes":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"]}],"references":["https://hackerone.com/reports/3539833","https://gitlab.com/gitlab-org/gitlab/-/work_items/591274","https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:11:50.837Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/3xxx/CVE-2026-3093.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-3093","state":"PUBLISHED","datePublished":"2026-07-29T19:02:11.038Z","dateUpdated":"2026-07-29T19:34:59.534Z","assignerShortName":"GitLab","assignerOrgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateReserved":"2026-02-24T02:34:16.776Z"},"containers":{"cna":{"title":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab","descriptions":[{"lang":"en","value":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 14.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an attacker to execute arbitrary JavaScript in another user's browser via a crafted URL, due to improper sanitization of user-controlled input."}],"affected":[{"vendor":"GitLab","product":"GitLab","defaultStatus":"unaffected","versions":[{"version":"14.0","status":"affected","lessThan":"19.0.5","versionType":"semver"},{"version":"19.1","status":"affected","lessThan":"19.1.3","versionType":"semver"},{"version":"19.2","status":"affected","lessThan":"19.2.1","versionType":"semver"}],"repo":"git://git@gitlab.com:gitlab-org/gitlab.git","cpes":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"]}],"references":[{"url":"https://hackerone.com/reports/3539833","name":"HackerOne Bug Bounty Report #3539833","tags":["technical-description","exploit","permissions-required"]},{"url":"https://gitlab.com/gitlab-org/gitlab/-/work_items/591274"},{"url":"https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":4.7,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitLab","orgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateUpdated":"2026-07-29T19:02:11.038Z"},"solutions":[{"lang":"en","value":"Upgrade to versions 19.0.5, 19.1.3, 19.2.1 or above."}],"credits":[{"lang":"en","value":"Thanks [go7f0](https://hackerone.com/go7f0) for reporting this vulnerability through our HackerOne bug bounty program","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-29T19:34:51.686360Z","id":"CVE-2026-3093","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-29T19:34:59.534Z"}}]}}}