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CVE-2026-89078— Double Free in GitLab

Quick assessment

Affected
GitLab GitLab
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GitLab 已修复了 GitLab CE/EE 中的一个漏洞，影响所有 19.2 之前至 19.2.7 之前、19.3 之前至 19.3.3 之前以及 19.4 之前至 19.4.1 之前的版本。在特定条件下，该漏洞可能导致经过身份验证的用户通过解析 CI/CD 配置中精心构造的正则表达式时引发的双重释放（double free）问题，在 GitLab 服务器上执行任意代码。

CVSS 9.9 · Critical EPSS 0.36% · P28
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I. Basic Information for CVE-2026-89078

Vulnerability Information
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Vulnerability Title
Double Free in GitLab
Source: CVE Program / CVE List V5
Vulnerability Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to execute arbitrary code on the GitLab server due to a double free issue when parsing a specially crafted regular expression in a CI/CD configuration.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
双重释放
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
GitLab GitLab 19.2 ~ 19.2.7 cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-89078

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III. Intelligence Information for CVE-2026-89078

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Other References for CVE-2026-89078 (3)

Same Patch Batch · GitLab · 2026-09-23 · 7 CVEs total

CVE-2026-93577 9.9 CRITICAL Integer Overflow or Wraparound in GitLab
CVE-2026-92470 7.7 HIGH Missing Authorization in GitLab
CVE-2026-92874 5.4 MEDIUM Incorrect Authorization in GitLab
CVE-2026-92530 4.3 MEDIUM Use of Less Trusted Source in GitLab
CVE-2026-92529 4.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-92628 3.1 LOW Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'

IV. Related Vulnerabilities

Same product: GitLab
Same vendor: GitLab
Same weakness: CWE-415

V. Comments for CVE-2026-89078

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