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CVE-2026-92883— Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') 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 GitLab CE/EE 中的一个安全问题，该问题影响以下所有版本：19.1 至 19.2.8 之前的版本、19.3 至 19.3.5 之前的版本，以及 19.4 至 19.4.2 之前的版本。在特定条件下，攻击者可通过精心构造的代码仓库，利用语法高亮输出中 HTML 属性未正确 sanitization（消毒/清理）的缺陷，使已认证用户在其他用户的浏览器会话上下文中执行任意 JavaScript 代码。

CVSS 8.7 · High EPSS 0.27% · P19

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 3

VendorProduct Version RangeStatus
GitLab GitLab 19.1< 19.2.8 affected
19.3< 19.3.5 affected
19.4< 19.4.2 affected
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I. Basic Information for CVE-2026-92883

Vulnerability Information
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Vulnerability Title
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
Source: CVE Program / CVE List V5
Vulnerability Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.1 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to execute arbitrary JavaScript in the context of other users' browser sessions via a specially crafted repository, due to improper sanitization of HTML attributes in syntax-highlighted output.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
GitLab GitLab 19.1 ~ 19.2.8 cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-92883

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-92883

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Other References for CVE-2026-92883 (1)

Same Patch Batch · GitLab · 2026-10-13 · 24 CVEs total

CVE-2026-97229 10.0 CRITICAL Integer Overflow or Wraparound in GitLab
CVE-2026-16301 8.5 HIGH Incorrect Authorization in GitLab
CVE-2026-14814 8.2 HIGH Permissive Regular Expression in GitLab
CVE-2026-81839 7.7 HIGH Incorrect Authorization in GitLab
CVE-2026-96893 7.3 HIGH Improper Neutralization of Input Used for LLM Prompting in GitLab
CVE-2026-101168 6.2 MEDIUM Insertion of Sensitive Information into Log File in GitLab
CVE-2026-7767 5.8 MEDIUM URL Redirection to Untrusted Site ('Open Redirect') in GitLab
CVE-2026-16275 5.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-84284 5.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-85529 5.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-100755 4.6 MEDIUM Acceptance of Extraneous Untrusted Data With Trusted Data in GitLab
CVE-2026-14210 4.3 MEDIUM Insufficient Granularity of Access Control in GitLab
CVE-2026-14552 4.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-6567 4.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-104661 4.3 MEDIUM Incorrect Privilege Assignment in GitLab
CVE-2026-105458 4.3 MEDIUM Reliance on Untrusted Inputs in a Security Decision in GitLab
CVE-2026-92528 4.2 MEDIUM Incorrect Authorization in GitLab
CVE-2026-5954 4.2 MEDIUM Incorrect Authorization in GitLab
CVE-2026-78335 4.2 MEDIUM Incorrect Authorization in GitLab
CVE-2026-100104 3.5 LOW Server-Side Request Forgery (SSRF) in GitLab

Showing top 20 of 24 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: GitLab
Same vendor: GitLab
Same weakness: CWE-79

V. Comments for CVE-2026-92883

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