{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-78252", "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "state": "PUBLISHED", "assignerShortName": "GitLab", "dateReserved": "2026-08-24T07:09:13.142Z", "datePublished": "2026-09-16T06:33:30.825Z", "dateUpdated": "2026-09-16T06:33:30.825Z"}, "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 15.3 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that, under certain conditions, an authenticated user could have induced a targeted user to perform unintended state-changing HTTP requests due to improper sanitization of user-controlled data in the Markdown JSON table renderer."}], "affected": [{"vendor": "GitLab", "product": "GitLab", "repo": "git://git@gitlab.com:gitlab-org/gitlab.git", "cpes": ["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"], "versions": [{"version": "15.3", "status": "affected", "lessThan": "19.1.8", "versionType": "semver"}, {"version": "19.2", "status": "affected", "lessThan": "19.2.6", "versionType": "semver"}, {"version": "19.3", "status": "affected", "lessThan": "19.3.2", "versionType": "semver"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "cweId": "CWE-79", "type": "CWE"}]}], "references": [{"url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/621447"}, {"url": "https://hackerone.com/reports/3917471", "name": "HackerOne Bug Bounty Report #3917471", "tags": ["technical-description", "exploit", "permissions-required"]}, {"url": "https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-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:H/I:H/A:L", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "LOW", "baseScore": 8.2, "baseSeverity": "HIGH"}}], "solutions": [{"lang": "en", "value": "Upgrade to versions 19.1.8, 19.2.6, 19.3.2 or above."}], "credits": [{"lang": "en", "value": "Thanks [a_m_a_m](https://hackerone.com/a_m_a_m) for reporting this vulnerability through our HackerOne bug bounty program", "type": "finder"}], "providerMetadata": {"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "shortName": "GitLab", "dateUpdated": "2026-09-16T06:33:30.825Z"}}}}

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{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "product": "GitLab", "repo": "git://git@gitlab.com:gitlab-org/gitlab.git", "vendor": "GitLab", "versions": [{"lessThan": "19.1.8", "status": "affected", "version": "15.3", "versionType": "semver"}, {"lessThan": "19.2.6", "status": "affected", "version": "19.2", "versionType": "semver"}, {"lessThan": "19.3.2", "status": "affected", "version": "19.3", "versionType": "semver"}]}], "source": "cve@gitlab.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.3 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that, under certain conditions, an authenticated user could have induced a targeted user to perform unintended state-changing HTTP requests due to improper sanitization of user-controlled data in the Markdown JSON table renderer."}], "id": "CVE-2026-78252", "lastModified": "2026-09-16T07:16:37.323", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 6.0, "source": "cve@gitlab.com", "type": "Secondary"}]}, "published": "2026-09-16T07:16:37.323", "references": [{"source": "cve@gitlab.com", "url": "https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/"}, {"source": "cve@gitlab.com", "url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/621447"}, {"source": "cve@gitlab.com", "url": "https://hackerone.com/reports/3917471"}], "sourceIdentifier": "cve@gitlab.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "cve@gitlab.com", "type": "Primary"}]}

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