{"id":"CVE-2023-3906","state":"PUBLISHED","title":"Improper Validation of Specified Type of Input in GitLab","description":"An input validation issue in the asset proxy in GitLab EE, affecting all versions from 12.3 prior to 16.2.8, 16.3 prior to 16.3.5, and 16.4 prior to 16.4.1, allowed an authenticated attacker to craft image urls which bypass the asset proxy.","publishedAt":"2023-09-29T06:02:16.308Z","updatedAt":"2026-08-14T04:11:40.087Z","severity":{"score":3.5,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N","source":"GitLab"},"assigner":"GitLab","products":["GitLab GitLab"],"affected":[{"vendor":"GitLab","product":"GitLab","defaultStatus":"unaffected","versions":[{"version":"12.3","status":"affected","lessThan":"16.2.8","versionType":"semver"},{"version":"16.3","status":"affected","lessThan":"16.3.5","versionType":"semver"},{"version":"16.4","status":"affected","lessThan":"16.4.1","versionType":"semver"}],"repo":"git://git@gitlab.com:gitlab-org/gitlab.git","cpes":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"]}],"references":["https://gitlab.com/gitlab-org/gitlab/-/issues/419213","https://hackerone.com/reports/2071411"],"weaknesses":["CWE-1287"],"ingestedAt":"2026-10-29T20:06:08.715Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/3xxx/CVE-2023-3906.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-3906","state":"PUBLISHED","datePublished":"2023-09-29T06:02:16.308Z","dateUpdated":"2026-08-14T04:11:40.087Z","assignerShortName":"GitLab","assignerOrgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateReserved":"2023-07-25T10:30:28.538Z"},"containers":{"cna":{"title":"Improper Validation of Specified Type of Input in GitLab","descriptions":[{"lang":"en","value":"An input validation issue in the asset proxy in GitLab EE, affecting all versions from 12.3 prior to 16.2.8, 16.3 prior to 16.3.5, and 16.4 prior to 16.4.1, allowed an authenticated attacker to craft image urls which bypass the asset proxy."}],"affected":[{"vendor":"GitLab","product":"GitLab","defaultStatus":"unaffected","versions":[{"version":"12.3","status":"affected","lessThan":"16.2.8","versionType":"semver"},{"version":"16.3","status":"affected","lessThan":"16.3.5","versionType":"semver"},{"version":"16.4","status":"affected","lessThan":"16.4.1","versionType":"semver"}],"repo":"git://git@gitlab.com:gitlab-org/gitlab.git","cpes":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"]}],"references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/issues/419213","name":"GitLab Issue #419213","tags":["issue-tracking"]},{"url":"https://hackerone.com/reports/2071411","name":"HackerOne Bug Bounty Report #2071411","tags":["technical-description","exploit","permissions-required","broken-link"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":3.5,"baseSeverity":"LOW"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1287","lang":"en","description":"CWE-1287: Improper Validation of Specified Type of Input","type":"CWE"}]}],"providerMetadata":{"shortName":"GitLab","orgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateUpdated":"2026-08-14T04:11:40.087Z"},"solutions":[{"lang":"en","value":"Upgrade to version 16.2.8, 16.3.5, 16.4.1 or above"}],"credits":[{"lang":"en","value":"Thanks [afewgoats](https://hackerone.com/afewgoats) for reporting this vulnerability through our HackerOne bug bounty program","type":"finder"}]},"adp":[{"title":"CVE Program Container","references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/issues/419213","name":"GitLab Issue #419213","tags":["issue-tracking","x_transferred"]},{"url":"https://hackerone.com/reports/2071411","name":"HackerOne Bug Bounty Report #2071411","tags":["technical-description","exploit","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T07:08:50.669Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-08-30T14:28:00.520335Z","id":"CVE-2023-3906","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":"2024-08-30T14:28:17.807Z"}}]}}}