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TI-2026-79139 Aliases CVE-2026-110264GHSA-83vq-rvff-66gw

Integer overflow in GitLab regex compilation allows code execution

Priority MEDIUM 52CWE-190Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 6 fixed, 5 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-190 and the CVSS impact.

Summary

GitLab CE and EE from 7.0 before 18.11.13, 19.0 before 19.0.10, 19.1 before 19.1.9, 19.2 before 19.2.9, 19.3 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 are affected. An integer overflow (CWE-190) occurs when GitLab compiles a specially crafted regular expression. Under certain conditions, an unauthenticated remote attacker can execute arbitrary code on the GitLab server. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

An issue has been discovered in GitLab CE/EE affecting all versions from 7.0 before 18.11.13, 19.0 before 19.0.10, 19.1 before 19.1.9, 19.2 before 19.2.9, 19.3 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, could have allowed an unauthenticated user to execute arbitrary code on the GitLab server due to integer overflow when compiling a specially crafted regular expression.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01349 71st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Partial GitLab (GitLab): 18.11.13, 19.0.10, 19.1.9 +4Red Hat: 7 advisoriesRed Hat: 6 fixed, 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GitLabGitLab7.0 to before 18.11.13; 19.0 to before 19.0.10; 19.1 to before 19.1.9; 19.2 to before 19.2.9; 19.3 to before 19.3.6; 19.4 to before 19.4.3; 19.5 to before 19.5.118.11.13, 19.0.10, 19.1.9, 19.2.9, 19.3.6, 19.4.3, 19.5.1Patch availableCNA
  • GitLab VendorGitLab Affected 7.0 to before 18.11.13; 19.0 to before 19.0.10; 19.1 to before 19.1.9; 19.2 to before 19.2.9; 19.3 to before 19.3.6; 19.4 to before 19.4.3; 19.5 to before 19.5.1 Fixed in 18.11.13, 19.0.10, 19.1.9, 19.2.9, 19.3.6, 19.4.3, 19.5.1 Patch available CNA

CPE configurations NVD · 14

CPEVersionsRoleVendor
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*7.0.0 to before 18.11.13VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*7.0.0 to before 18.11.13VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*19.0.0 to before 19.0.10VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*19.0.0 to before 19.0.10VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*19.1.0 to before 19.1.9VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*19.1.0 to before 19.1.9VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*19.2.0 to before 19.2.9VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*19.2.0 to before 19.2.9VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*19.3.0 to before 19.3.6VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*19.3.0 to before 19.3.6VulnerableGitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 7.0.0 to before 18.11.13 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 7.0.0 to before 18.11.13 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 19.0.0 to before 19.0.10 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 19.0.0 to before 19.0.10 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 19.1.0 to before 19.1.9 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 19.1.0 to before 19.1.9 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 19.2.0 to before 19.2.9 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 19.2.0 to before 19.2.9 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 19.3.0 to before 19.3.6 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 19.3.0 to before 19.3.6 Vulnerable ·GitLab
Show 4 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*19.4.0 to before 19.4.3VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*19.4.0 to before 19.4.3VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:community:*:*:*19.5.0VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:enterprise:*:*:*19.5.0VulnerableGitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 19.4.0 to before 19.4.3 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 19.4.0 to before 19.4.3 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:community:*:*:* Versions 19.5.0 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:enterprise:*:*:* Versions 19.5.0 Vulnerable ·GitLab

Remediation

Upgrade GitLab CE and EE to 18.11.13, 19.0.10, 19.1.9, 19.2.9, 19.3.6, 19.4.3, or 19.5.1. Red Hat fixes Satellite 6.16 EUS for RHEL 8 and RHEL 9 in RHSA-2026:95655, Satellite 6.17 for RHEL 9 in RHSA-2026:95656, Satellite 6.18 for RHEL 9 in RHSA-2026:95657, Satellite 6.19 for RHEL 9 in RHSA-2026:95652, and Red Hat Hardened Images in RHSA-2026:88861, RHSA-2026:88865 and RHSA-2026:88880. The sources list no fixed version for Red Hat Enterprise Linux 6, 7, 8, 9 and 10.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA GitLab (GitLab) Fixed in 18.11.13, 19.0.10, 19.1.9, 19.2.9, 19.3.6, 19.4.3, 19.5.1

Red Hat 7 advisories

  • RHSA-2026:95655 Released 2026-11-05 · Red Hat rating Critical
    Satellite 6.16 EUS security update
    • Red Hat Satellite 6.16 for RHEL 8 openvox-agent-8.32.0-1.el8sat, openvox-server-8.18.0-1.el8sat, python-brotli-1.2.1-1.el8pc +11
    • Red Hat Satellite 6.16 for RHEL 9 openvox-agent-8.32.0-1.el9sat, openvox-server-8.18.0-1.el9sat, python-brotli-1.2.1-1.el9pc +11
  • RHSA-2026:95657 Released 2026-11-05 · Red Hat rating Critical
    Satellite 6.18 security update
    • Red Hat Satellite 6.18 for RHEL 9 openvox-agent-8.32.0-1.el9sat, openvox-server-8.18.0-1.el9sat, python3.12-brotli-1.2.1-1.el9pc +4
  • RHSA-2026:95656 Released 2026-11-05 · Red Hat rating Critical
    Satellite 6.17 security update
    • Red Hat Satellite 6.17 for RHEL 9 openvox-agent-8.32.0-1.el9sat, openvox-server-8.18.0-1.el9sat, python-brotli-1.2.1-1.el9pc +9
Show 4 more Red Hat advisories
  • RHSA-2026:95652 Released 2026-11-05 · Red Hat rating Critical
    Satellite 6.19 security update
    • Red Hat Satellite 6.19 for RHEL 9 openvox-agent-8.32.0-1.el9sat, openvox-server-8.18.0-1.el9sat
  • RHSA-2026:88880 Released 2026-10-24 · Red Hat rating Critical
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images ruby3.3-3.3.13-23.8.hum1@aarch64, ruby3.3-3.3.13-23.8.hum1@s390x, ruby3.3-3.3.13-23.8.hum1@src +16
  • RHSA-2026:88865 Released 2026-10-24 · Red Hat rating Critical
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images ruby4.0-4.0.9-41.hum1@aarch64, ruby4.0-4.0.9-41.hum1@s390x, ruby4.0-4.0.9-41.hum1@src +16
  • RHSA-2026:88861 Released 2026-10-23 · Red Hat rating Critical
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images ruby3.4-3.4.12-33.1.hum1@aarch64, ruby3.4-3.4.12-33.1.hum1@s390x, ruby3.4-3.4.12-33.1.hum1@src +16

Vendor assessments

Red Hat

Red Hat rating: Critical. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat Enterprise Linux 6AffectedNo fix yet
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat Hardened ImagesFixed RHSA-2026:88861, RHSA-2026:88865, RHSA-2026:88880
Red Hat Satellite 6.16 for RHEL 8Fixed RHSA-2026:95655
Red Hat Satellite 6.16 for RHEL 9Fixed RHSA-2026:95655
Red Hat Satellite 6.17 for RHEL 9Fixed RHSA-2026:95656
Red Hat Satellite 6.18 for RHEL 9Fixed RHSA-2026:95657
Red Hat Satellite 6.19 for RHEL 9Fixed RHSA-2026:95652
Not affected: 8 products
  • Red Hat Hardened Images
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenShift Container Platform 5
  • Red Hat Satellite 6.16 for RHEL 8
  • Red Hat Satellite 6.16 for RHEL 9
  • Red Hat Satellite 6.17 for RHEL 9
  • Red Hat Satellite 6.18 for RHEL 9
  • Red Hat Satellite 6.19 for RHEL 9

Timeline

  1. 2026-10-22 Threatist record created from CVE-2026-110264
  2. 2026-10-22 Alias added: GHSA-83vq-rvff-66gw
  3. 2026-10-22 CISA SSVC decision points changed
  4. 2026-10-23 CISA SSVC decision points changed
  5. 2026-10-25 EPSS moved to the 50th–90th percentile
  6. 2026-10-27 Affected versions changed · Red Hat
  7. 2026-10-27 CVSS score added · Red Hat
  8. 2026-10-28 Affected versions changed · Red Hat
  9. 2026-10-29 Fix available: RHSA-2026:88861 · Red Hat
  10. 2026-10-29 Fix available: RHSA-2026:88865 · Red Hat
  11. 2026-10-29 Fix available: RHSA-2026:88880 · Red Hat
  12. 2026-10-29 Fix available: Red Hat Hardened Images · Red Hat
  13. 2026-10-30 Affected versions changed · Red Hat
  14. 2026-11-05 Affected versions changed · Red Hat
  15. 2026-11-06 Fix available: Red Hat Satellite 6.16 for RHEL 8, Red Hat Satellite 6.16 for RHEL 9, Red Hat Satellite 6.17 for RHEL 9 +2 · Red Hat
  16. 2026-11-06 Fix available: RHSA-2026:95652 · Red Hat
  17. 2026-11-06 Fix available: RHSA-2026:95656 · Red Hat
  18. 2026-11-06 Fix available: RHSA-2026:95655 · Red Hat
  19. 2026-11-06 Fix available: RHSA-2026:95657 · Red Hat

References

Exploit 1

Advisory 1

Other 1

  • TI-2026-71508 Integer overflow in GitLab allows code execution on the server KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-58817 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in GitLab KEVCVSS 3.1CRITICAL 10.0
  • TI-2023-06425 Weak Password Recovery Mechanism for Forgotten Password in GitLab KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-05191 Code injection in GitLab KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-05161 Server-side request forgery in GitLab KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-02763 Injection in GitLab CVSS 3.1CRITICAL 9.9
See all 1506 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences