CVE-2026-15723 GitLab CE/EE - Authentication Bypass

GitLab CE/EE >= 10.1 and < 19.3.6, 19.4 >= 19.4 and < 19.4.3, 19.5 >= 19.5 and < 19.5.1 contains an authentication bypass caused by improper input sanitization in LDAP email lookup during OmniAuth identity linking, letting authenticated users take over LDAP-backed accounts without user interaction.

CVSS base score 8.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.33% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Published
22 October 2026
Updated
23 October 2026
Weakness
CWE-90

Vendor fix

Update to GitLab CE/EE 19.3.6, 19.4.3, 19.5.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs