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

[TLP:CLEAR] GitLab CE/EE fixes 15 vulnerabilities

GitLab fixes 15 vulnerabilities in GitLab Community Edition (CE) and Enterprise Edition (EE) with versions 18.9.2, 18.8.6 and 18.7.6 [1]. The most severe vulnerabilities are listed below.

GitLab CE/EE - XSS (CVE-2026-1090)
CVSS 8.7 (High)

Due to insufficient sanitization of placeholder variables when processing Markdown content, an authenticated remote attacker can carry out an XSS attack [1].

The vulnerability is present in products:

  • GitLab Community Edition; >=10.6, <18.7.6; >=18.8, <18.8.6; >=18.9, < 18.9.2
  • GitLab Enterprise Edition; >=10.6, <18.7.6; >=18.8, <18.8.6; >=18.9, < 18.9.2

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

More information:

  • CVE-2026-1090 at cve.org, NVD
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') at cwe.mitre.org

The vulnerability was publicly disclosed 11. 3. 2026.

GitLab CE/EE - DoS (CVE-2026-1069)
CVSS 7.5 (High)

Due to uncontrolled recursion in the GraphQL API, an unauthenticated remote attacker can carry out a DoS attack by sending specially crafted requests [1].

The vulnerability is present in products:

  • GitLab Community Edition; >=18.9, <18.9.2
  • GitLab Enterprise Edition; >=18.9, <18.9.2

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

More information:

The vulnerability was publicly disclosed 11. 3. 2026.

GitLab CE/EE - DoS (CVE-2025-13929)
CVSS 7.5 (High)

An unauthenticated remote attacker can carry out a DoS attack by sending specially crafted requests to repository archive endpoints [1].

The vulnerability is present in products:

  • GitLab Community Edition; >=10.0, <18.7.6; >=18.8, <18.8.6; >=18.9, <18.9.2
  • GitLab Enterprise Edition; >=10.0, <18.7.6; >=18.8, <18.8.6; >=18.9, <18.9.2

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

More information:

The vulnerability was publicly disclosed 11. 3. 2026.

GitLab CE/EE - DoS (CVE-2025-14513)
CVSS 7.5 (High)

Due to insufficient input validation when processing specially crafted JSON requests in the protected branches API, an unauthenticated remote attacker can carry out a DoS attack [1].

The vulnerability is present in products:

  • GitLab Community Edition; >=16.11, <18.7.6; >=18.8, <18.8.6; >=18.9, <18.9.2
  • GitLab Enterprise Edition; >=16.11, <18.7.6; >=18.8, <18.8.6; >=18.9, <18.9.2

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

More information:

The vulnerability was publicly disclosed 11. 3. 2026.


By CESNET, z.s.p.o. Henrieta Paločková on 12. 3. 2026.

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