This report was translated by AI; nobody has reviewed the translation yet. Original language: Czech.

[TLP:CLEAR] GitLab CE/EE fixes 7 vulnerabilities

GitLab fixes 7 vulnerabilities in GitLab Community Edition (CE) and Enterprise Edition (EE) with versions 19.0.1, 18.11.4 and 18.10.7. The most severe of them can be found below, the remaining ones at [1].

GitLab EE - user impersonation (CVE-2026-4868)
CVSS 8.2 (High)

An authenticated remote attacker can, under certain conditions, run selected Duo AI workflows under the identity of another user in GitLab EE [1].

The vulnerability is present in product:

  • GitLab Enterprise Edition; >=18.8, <18.10.7; >=18.11, <18.11.4; >=19.0, <19.0.1

CVSS: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

More information:

The vulnerability was publicly disclosed 27. 5. 2026.

GitLab CE/EE - DoS (CVE-2026-1402)
CVSS 6.5 (Medium)

An authenticated remote attacker can, under certain conditions, carry out a DoS attack in GitLab CE/EE due to insufficient validation in the Wiki [1].

The vulnerability is present in products:

  • GitLab Community Edition; >=17.1, <18.10.7; >=18.11, <18.11.4; >=19.0, <19.0.1
  • GitLab Enterprise Edition; >=17.1, <18.10.7; >=18.11, <18.11.4; >=19.0, <19.0.1

CVSS: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

More information:

The vulnerability was publicly disclosed 27. 5. 2026.

GitLab CE/EE - private projects enumeration (CVE-2026-6713)
CVSS 5.3 (Medium)

An unauthenticated remote attacker can, under certain conditions, enumerate private projects in GitLab CE/EE due to improper authorization checks in the GraphQL WorkItem API [1].

The vulnerability is present in product:

  • GitLab Community Edition; >=18.2, <18.10.7; >=18.11, <18.11.4; >=19.0, <19.0.1

CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

More information:

The vulnerability was publicly disclosed 27. 5. 2026.


By CESNET, z.s.p.o. Michaela Jarošová on 29. 5. 2026.

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