CVE-2026-0752Public exploitNetwork attack vector

Unauthorized account actions via webpack path injection

Published Feb 25, 2026 · Updated Feb 25, 2026

Cross-site scripting in GitLab CE/EE 16.2 through 18.7.4, 18.8.0 through 18.8.4, and 18.9.0 allows remote attackers to run scripts. The Mermaid sandbox reads relativeRootPath without validation and assigns it to webpack's public path, allowing protocol-relative URLs to load attacker-hosted chunks. Exploitation requires user interaction and a same-origin postMessage trigger; successful execution can perform actions as the authenticated victim.

CVSS severity8.0
High
EPSS probability0.31%
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 16.2 through 18.7.4, 18.8.0 through 18.8.4, and 18.9.0 allows remote attackers to run scripts. The Mermaid sandbox reads relativeRootPath without validation and assigns it to webpack's public path, allowing protocol-relative URLs to load attacker-hosted chunks. Exploitation requires user interaction and a same-origin postMessage trigger; successful execution can perform actions as the authenticated victim.

The record

CVE
CVE-2026-0752
Published
Feb 25, 2026
Updated
Feb 25, 2026
Vendor
GitLab
Product
GitLab
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2026Record 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=16.2 <18.7.5
  2. Affected versionversion=18.8 <18.8.5
  3. Affected versionversion=18.9 <18.9.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GitLab · GitLabversion=16.2 <18.7.5; version=18.8 <18.8.5; version=18.9 <18.9.1

Published CVSS scores

8.0GitLab Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

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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