{“lastseen”:””,”description”:”GitLab has remediated an issue in GitLab CE\/EE affecting all versions from 18.3 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that under specific conditions could have allowed an unauthenticated user to join arbitrary organizations by changing headers on some requests.”,”published”:”2025-11-26T19:46:12.641Z”,”modified”:”2025-11-26T19:46:12.641Z”,”type”:”cve”,”title”:”Authentication Bypass by Spoofing in GitLab”,”source”:”GitLab”,”references”:”https:\/\/gitlab.com\/gitlab-org\/gitlab\/-\/issues\/579372\\nhttps:\/\/hackerone.com\/reports\/3370245″,”id”:”CVE-2025-12653″,”bulletinFamily”:””,”cwe”:[“CWE-290″],”cvelist”:null,”sourceData”:”GitLab GitLab 18.3\\nGitLab GitLab 18.5\\nGitLab GitLab 18.6″,”sourceHref”:””,”cvss”:{“score”:6.5,”severity”:”MEDIUM”,”vector”:”CVSS:3.1\/AV:N\/AC:L\/PR:N\/UI:N\/S:U\/C:L\/I:L\/A:N”,”version”:”3.1″},”cvss2″:{},”cvss3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””,”cvssV3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””}},”href”:””,”category_name”:”CVE”,”post_link”:””,”product”:”GitLab”,”version”:”18.3″,”vendor”:”GitLab”,”ai_description”:””,”ai_severity”:””,”ai_vendor”:””,”ai_product”:””,”ai_version”:””,”ai_score”:0}<\/p>\n","protected":false},"excerpt":{"rendered":"
{“lastseen”:””,”description”:”GitLab has remediated an issue in GitLab CE\/EE affecting all versions from 18.3 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that under specific…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[6,8,26,12,21,13,7,11,5],"class_list":["post-27791","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-cve","tag-cvss","tag-cvss-65","tag-exploit","tag-medium","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"\n