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CVE-2026-12635 Reliance on Reverse DNS Resolution for a Security-Critical Action in GitLab

🗓️ 25 Jun 2026 04:33:34Reported by GitLabType 
cvelist
 cvelist
🔗 www.cve.org👁 73 Views

CVE-2026-12635: Maintainer could access internal resources via mirror synchronization due to URL validation flaw.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-12635
25 Jun 202604:33
–attackerkb
bdu_fstec
BDU FSTEC
GitLab Reverse DNS Unauthorized Access
2 Jul 202600:00
–bdu_fstec
circl
Circl
CVE-2026-12635
25 Jun 202605:45
–circl
cve
CVE
CVE-2026-12635
25 Jun 202604:33
–cve
freebsd
FreeBSD
Gitlab -- Vulnerabilities
24 Jun 202600:00
–freebsd
euvd
EUVD
EUVD-2026-39168
25 Jun 202604:33
–euvd
nessus
Tenable Nessus
FreeBSD : Gitlab -- Vulnerabilities (ee1e7aef-7117-11f1-873f-2cf05da270f3)
26 Jun 202600:00
–nessus
nessus
Tenable Nessus
GitLab 8.3 < 18.11.6 / 19.0 < 19.0.3 / 19.1 < 19.1.1 (CVE-2026-12635)
25 Jun 202600:00
–nessus
ncsc
NCSC
Vulnerabilities are handled in GitLab Community Edition and Enterprise Edition
25 Jun 202611:26
–ncsc
nvd
NVD
CVE-2026-12635
25 Jun 202605:16
–nvd
Rows per page
[
  {
    "vendor": "GitLab",
    "product": "GitLab",
    "repo": "git://[email protected]:gitlab-org/gitlab.git",
    "cpes": [
      "cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"
    ],
    "versions": [
      {
        "version": "8.3",
        "status": "affected",
        "lessThan": "18.11.6",
        "versionType": "semver"
      },
      {
        "version": "19.0",
        "status": "affected",
        "lessThan": "19.0.3",
        "versionType": "semver"
      },
      {
        "version": "19.1",
        "status": "affected",
        "lessThan": "19.1.1",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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