{"id":"CVE-2026-78252","aliases":["BIT-gitlab-2026-78252","EUVD-2026-80222","GHSA-3xqm-9h96-4cr4"],"status":"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 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.","severity":{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0027,"percentile":0.19349,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2026-09-16T06:33:30Z","modified":"2026-10-31T10:45:24Z","fixes":[{"ecosystem":"Bitnami","package":"gitlab","fixed_in":["19.1.8","19.2.6","19.3.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitlab","ranges":[{"type":"SEMVER","events":[{"introduced":"15.3.0"},{"fixed":"19.1.8"},{"introduced":"19.2.0"},{"fixed":"19.2.6"},{"introduced":"19.3.0"},{"fixed":"19.3.2"}]}]}],"products":[{"vendor":"gitlab","product":"gitlab"}],"references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/work_items/621447","tags":["Issue Tracking","report","web"]},{"url":"https://hackerone.com/reports/3917471","tags":["technical-description","exploit","permissions-required","Permissions Required","web","report"]},{"url":"https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/","tags":["Release Notes","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78252","tags":["web","advisory"]},{"url":"https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released"},{"url":"https://github.com/advisories/GHSA-3xqm-9h96-4cr4"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78252.json","tags":["advisory"]},{"url":"git://git@gitlab.com:gitlab-org/gitlab.git","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-78252","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 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.","status":"published","published":"2026-09-16T06:33:30.825Z","modified":"2026-09-16T15:41:47.657Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:34:59.78118Z"}],"euvd":[{"id":"EUVD-2026-80222","description":"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.","status":"published","published":"2026-09-16T06:33:30Z","modified":"2026-09-16T15:41:47Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T17:28:15.407859Z"}],"ghsa":[{"id":"GHSA-3xqm-9h96-4cr4","title":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.3 before 19.1.8, 19...","description":"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.","status":"published","published":"2026-09-16T09:30:24Z","modified":"2026-09-16T09:30:25Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:11:57.71972Z"}],"nvd":[{"id":"CVE-2026-78252","description":"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.","status":"published","published":"2026-09-16T07:16:37.323Z","modified":"2026-09-28T13:26:58.44Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:48.287983Z"}],"osv":[{"id":"CVE-2026-78252","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 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.","status":"published","published":"2026-09-16T06:33:30.825Z","modified":"2026-10-31T10:45:24.301528972Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:17.44708Z"},{"id":"BIT-gitlab-2026-78252","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 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.","status":"published","published":"2026-09-25T12:49:59.824Z","modified":"2026-09-29T10:00:03.729110663Z","updated_at":"2026-11-02T15:28:30.70064Z"}]}}