CVE-2026-78077CWE-79cross-site-scripting

CVE-2026-78077

published August 31, 2026

CVSS
8.6
EPSS
0%
Percentile
35.0
In the wild
Unconfirmed
What it is

Joomla Extension - joomshaper.com - Stored Cross-Site Scripting (XSS) in MegaMenu Layout Container & Embed Inputs in Helix Ultimate < 2.2.10 - Unsanitized column and item configuration values stored within the MegaMenu layout JSON were rendered without complete contextual escaping, allowing injection of malicious HTML/JS. Stricter sanitization and tag allowlists via `InputFilter` and `htmlspecialchars` were implemented.

The record
Technical detail
CVSS
8.6 · NONE
CVSS v4.0
8.6 · CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
EPSS
0.00418 · 35.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-08-31T18:17Z
References (1)
https://www.joomshaper.com/joomla-templates/helixultimate · [email protected]
EPSS history
Timeline
  • 02 SEP 03:39Z
    EPSS moved — → 0%
    epss
  • 31 AUG 13:53Z
    Joomla Extension - joomshaper.com - Stored Cross-Site Scripting (XSS) in MegaMenu Layout Container & Embed Inputs in Helix Ultimate < 2.2.10
    cvelistv5