CVE-2026-0595CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

High · published February 11, 2026

CVSS v3.1
7.3
EPSS
0%
Percentile
16.6
In the wild
Unconfirmed
What it is

⚡ Just one crafty title could let a sneaky user add unauthorized email addresses to victim accounts! GitLab has patched a vulnerability that impacts multiple versions, and it's a big deal! 🔧 Think of it like a restaurant where a waiter can add extra names to the reservations list without checking if the diners are legit — it could lead to some unwanted guests at your table! If exploited, an attacker could manipulate account details and potentially hijack victim accounts by injecting unauthorized email addresses. This could lead to significant privacy breaches and compromise sensitive information. Not good!

Put simply

Think of it like a restaurant where a waiter can add extra names to the reservations list without checking if the diners are legit — it could lead to some unwanted guests at your table! This HTML injection vulnerability allows an authenticated user to alter test case titles, enabling them to add unauthorized email addresses to other users' accounts. It's a sneaky way to gain access to information that shouldn't be theirs.

What to do

If exploited, an attacker could manipulate account details and potentially hijack victim accounts by injecting unauthorized email addresses. This could lead to significant privacy breaches and compromise sensitive information. Not good! To protect yourself, update GitLab to versions 18.6.6, 18.7.4, or 18.8.4 immediately. Review your account settings and permissions to ensure no unauthorized changes were made. It's time to secure those accounts! You've got this! By following these steps, you’ll have your GitLab instance locked down in no time. 🛡️

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00258 · 16.6th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-02-11T11:33Z
EPSS history
Timeline
  • 11 FEB 11:33Z
    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
    cvelistv5