CVE-2026-19619Network attack vectorHinoki check available

Session script execution via unsanitized pasted HTML

Published Sep 16, 2026 · Updated Sep 16, 2026

Cross-site scripting in the Content Editor in GitLab CE/EE allows remote attackers to execute JavaScript in a targeted user's session. The Content Editor improperly sanitizes pasted HTML, allowing script content to run in the origin of the targeted GitLab session. Affected releases are 19.0 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2; exploitation requires targeted-user interaction and permits session-context reads and actions.

CVSS severity4.7
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Cross-site scripting in the Content Editor in GitLab CE/EE allows remote attackers to execute JavaScript in a targeted user's session. The Content Editor improperly sanitizes pasted HTML, allowing script content to run in the origin of the targeted GitLab session. Affected releases are 19.0 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2; exploitation requires targeted-user interaction and permits session-context reads and actions.

The record

CVE
CVE-2026-19619
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
GitLab
Product
GitLab
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=19.0 <19.1.8
  2. Affected versionversion=19.2 <19.2.6
  3. Affected versionversion=19.3 <19.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GitLab · GitLabversion=19.0 <19.1.8; version=19.2 <19.2.6; version=19.3 <19.3.2

Published CVSS scores

4.7GitLabCVSS:3.1/AV:N/AC:H/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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