CVE-2026-71573CWE-93

CVE-2026-71573

High · published August 18, 2026

CVSS v3.1
8.3
EPSS
0%
Percentile
26.5
In the wild
Unconfirmed
What it is

Joomla! Core - [20260802] - Improper CORS origin validation in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 - An improper implementation prevented configured CORS origins from being properly validated in CORS requests.

The record
Technical detail
CVSS v3.1
8.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L
EPSS
0.00342 · 26.5th percentile
Weakness
CWE-93 · Improper Neutralization of CRLF Sequences ('CRLF Injection')
Published
2026-08-18T21:17Z
Affected products (2)
ProductVersionsFixed in
joomla/joomla\!≥ 4.0.0, < 5.4.85.4.8
joomla/joomla\!≥ 6.0.0, < 6.1.36.1.3
References (2)
https://developer.joomla.org/security-centre/20260802-core-improper-cors-origin-validation.html · [email protected]https://www.joomla.org/ · [email protected]
EPSS history
Timeline
  • 18 AUG 16:09Z
    Joomla! Core - [20260802] - Improper CORS origin validation in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2
    cvelistv5