Back to CVE records
Medium 6.9Published Aug 18, 2026
CVE-2026-71573Joomla! Core - [20260802] - Improper CORS origin validation in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2
Updated under an hour ago ()
Does this affect you?
It affects Joomla! Project Joomla! CMS and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Start free and add your stack
Free account, 1 product
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.
- CVSS
- 6.9 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-93
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Joomla
- NVD analysis
- Analyzed
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Joomla! Project Joomla! CMS joomla_project:joomla_cms (from the name) | 4.0.0-5.4.6; 6.0.0-6.1.2 | CNA record |
joomla joomla! joomla:joomla! | from 4.0.0 before 5.4.8; from 6.0.0 before 6.1.3 | NVD |
References
- https://www.joomla.org/product
- https://developer.joomla.org/security-centre/20260802-core-improper-cors-origin-validation.htmlvendor-advisory, broken-link
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.