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10.0
CRITICAL CVSS 3.1
CVE-2026-110264
Integer Overflow or Wraparound in GitLab
Overview
Description

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.

Details
INFO

Published Date :

Oct. 22, 2026, 1:16 a.m.

Last Modified :

Nov. 4, 2026, 11:10 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2026-110264 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Gitlab gitlab
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 3.1 CRITICAL ceab7361-8a18-47b1-92ba-4d7d25f6715a
CVSS 3.1 CRITICAL MITRE-CVE
CVSS 3.1 CRITICAL [email protected]
Solution
Update GitLab to a patched version to fix arbitrary code execution vulnerability.
  • Update GitLab to a patched version.
  • Apply vendor-provided security updates.
  • Compile regular expressions securely.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-110264.

URL Resource
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/ Release Notes Vendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/work_items/633633 Permissions Required
https://hackerone.com/reports/4093475 Permissions Required
https://www.ruby-lang.org/en/news/2026/10/23/regexp-fixes-for-gitlab-cves/
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-110264 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-110264 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-110264 vulnerability anywhere in the article.

  • The Hacker News
Attacker Tried to Exploit Alpine Linux’s GitLab via CVSS 10.0 Flaw Its Ruby Left Open

An attacker tried to exploit a critical GitLab vulnerability on the Alpine Linux project's own GitLab server a week after GitLab released a fix, Alpine Linux said on 28 October. The flaw, CVE-2026-972 ... Read more

Published Date: Oct 29, 2026 (2 weeks, 2 days ago)
  • The Hacker News
Ruby Fixes Three Regex Engine Bugs Responsible for Four Critical GitLab RCE Flaws

Ruby has released versions 4.0.9, 3.4.12, and 3.3.13 to fix three bugs in Onigmo, the regular expression engine built into the language. The bugs lie behind four critical security flaws that GitLab pa ... Read more

Published Date: Oct 23, 2026 (3 weeks, 1 day ago)
  • TheCyberThrone
GitLab Releases Critical Security Patches

GitLab released a critical patch update on October 21, 2026, fixing 12  security vulnerabilities in GitLab Community Edition (CE) and Enterprise Edition (EE).The release includes a critical remote cod ... Read more

Published Date: Oct 22, 2026 (3 weeks, 2 days ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-110264 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Translated by [email protected]

    Nov. 04, 2026

    Action Type Old Value New Value
    Added Translation Title: GitLab, Description: Se ha descubierto un problema en GitLab CE/EE que afecta a todas las versiones desde la 7.0 y anteriores a la 18.11.13, la 19.0 y anteriores a la 19.0.10, la 19.1 y anteriores a la 19.1.9, la 19.2 y anteriores a la 19.2.9, la 19.3 y anteriores a la 19.3.6, la 19.4 y anteriores a la 19.4.3, y la 19.5 y anteriores a la 19.5.1 que, bajo ciertas condiciones, podría haber permitido a un usuario no autenticado ejecutar código arbitrario en el servidor de GitLab debido a un desbordamiento de entero al compilar una expresión regular especialmente diseñada.
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Oct. 31, 2026

    Action Type Old Value New Value
    Added Reference https://www.ruby-lang.org/en/news/2026/10/23/regexp-fixes-for-gitlab-cves/
  • Initial Analysis by [email protected]

    Oct. 27, 2026

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 19.4.0 up to (excluding) 19.4.3 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 19.4.0 up to (excluding) 19.4.3 *cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:community:*:*:* *cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 19.0.0 up to (excluding) 19.0.10 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 19.1.0 up to (excluding) 19.1.9 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 19.2.0 up to (excluding) 19.2.9 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 19.3.0 up to (excluding) 19.3.6 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 7.0.0 up to (excluding) 18.11.13 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 19.0.0 up to (excluding) 19.0.10 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 19.1.0 up to (excluding) 19.1.9 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 19.2.0 up to (excluding) 19.2.9 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 19.3.0 up to (excluding) 19.3.6 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 7.0.0 up to (excluding) 18.11.13
    Added Reference Type GitLab Inc.: https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/ Types: Release Notes, Vendor Advisory
    Added Reference Type GitLab Inc.: https://gitlab.com/gitlab-org/gitlab/-/work_items/633633 Types: Permissions Required
    Added Reference Type GitLab Inc.: https://hackerone.com/reports/4093475 Types: Permissions Required
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 22, 2026

    Action Type Old Value New Value
    Removed SSVC {'id': 'CVE-2026-110264', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-10-22T12:50:08.716294Z'}
    Added SSVC {'id': 'CVE-2026-110264', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-10-21T00:00:00+00:00'}
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 22, 2026

    Action Type Old Value New Value
    Added SSVC {'id': 'CVE-2026-110264', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-10-22T12:50:08.716294Z'}
  • New CVE Received by [email protected]

    Oct. 22, 2026

    Action Type Old Value New Value
    Added Description 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.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    Added CWE CWE-190
    Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/110xxx/CVE-2026-110264.json">CVE-2026-110264</a>
    Added Reference https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/
    Added Reference https://gitlab.com/gitlab-org/gitlab/-/work_items/633633
    Added Reference https://hackerone.com/reports/4093475
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 10
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact