CVE-2023-0050Network attack vector

Stored script execution via crafted Kroki diagram

Published Mar 9, 2023 · Updated Feb 28, 2025

Stored XSS in GitLab 13.7 through 15.7.7, 15.8 through 15.8.3, and 15.9 through 15.9.1 allows remote authenticated users to act as victims. GitLab identifies the Kroki diagram rendering path but does not disclose the exact client-side neutralization failure that permits stored script execution. Exploitation requires a low-privileged user to store a crafted diagram and another user to view it, after which the script can perform actions with the victim's session.

CVSS severity8.7
High
EPSS probability92.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in GitLab 13.7 through 15.7.7, 15.8 through 15.8.3, and 15.9 through 15.9.1 allows remote authenticated users to act as victims. GitLab identifies the Kroki diagram rendering path but does not disclose the exact client-side neutralization failure that permits stored script execution. Exploitation requires a low-privileged user to store a crafted diagram and another user to view it, after which the script can perform actions with the victim's session.

The record

CVE
CVE-2023-0050
Published
Mar 9, 2023
Updated
Feb 28, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-79
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 28, 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=>=13.7, <15.7.8
  2. Affected versionversion=>=15.8, <15.8.4
  3. Affected versionversion=>=15.9, <15.9.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=>=13.7, <15.7.8; version=>=15.8, <15.8.4; version=>=15.9, <15.9.2

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.

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 exploitUnconfirmed

Weakness, pattern, technique

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

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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