CVE-2026-92883Network attack vectorHinoki check available

Browser script execution via unsanitized highlighting attributes

Published Oct 13, 2026 · Updated Oct 13, 2026

XSS in GitLab CE/EE syntax highlighting allows remote authenticated users to run JavaScript in other users' browsers via repositories. Syntax-highlighted output fails to properly sanitize HTML attributes derived from a specially crafted repository. Exploitation requires another user to interact with affected content; execution occurs within that user's browser session, not on the GitLab server.

CVSS severity8.7
High
EPSS probability0.27%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

XSS in GitLab CE/EE syntax highlighting allows remote authenticated users to run JavaScript in other users' browsers via repositories. Syntax-highlighted output fails to properly sanitize HTML attributes derived from a specially crafted repository. Exploitation requires another user to interact with affected content; execution occurs within that user's browser session, not on the GitLab server.

The record

CVE
CVE-2026-92883
Published
Oct 13, 2026
Updated
Oct 13, 2026
Vendor
GitLab
Product
GitLab
Classifications
T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 13, 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=19.1 <19.2.8
  2. Affected versionversion=19.3 <19.3.5
  3. Affected versionversion=19.4 <19.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=19.1 <19.2.8; version=19.3 <19.3.5; version=19.4 <19.4.2

Published CVSS scores

8.7GitLabCVSS: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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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