CVE-2025-9642Public exploitNetwork attack vector

Account takeover via Script Gadget HTML injection

Published Sep 26, 2025 · Updated Sep 26, 2025

Cross-site scripting in GitLab CE/EE allows remote authenticated users to take over accounts through malicious Script Gadget content. Code-navigation rendering decodes attacker-controlled HTML entities through textContent and then assigns the result to innerHTML, allowing data attributes to activate script gadgets. An attacker must control repository content and induce another user to open the affected code view; execution can perform actions in that user's session.

CVSS severity8.7
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in GitLab CE/EE allows remote authenticated users to take over accounts through malicious Script Gadget content. Code-navigation rendering decodes attacker-controlled HTML entities through textContent and then assigns the result to innerHTML, allowing data attributes to activate script gadgets. An attacker must control repository content and induce another user to open the affected code view; execution can perform actions in that user's session.

The record

CVE
CVE-2025-9642
Published
Sep 26, 2025
Updated
Sep 26, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=14.10 <18.2.7
  2. Affected versionversion=18.3 <18.3.3
  3. Affected versionversion=18.4 <18.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=14.10 <18.2.7; version=18.3 <18.3.3; version=18.4 <18.4.1

Published CVSS scores

9.6NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
8.7GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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