Vulnerability in Joomla Joomla\!
CVE-2026-71572
Joomla! Core - [20260801] - Response header injection in download views in Joomla 3.0.0-5.4.7, 6.0.0-6.1.2 - Lack of output processing allowed a header injection in the multiple download views, leading to reflected file download / content-type confusion.
Vulnerability class: CRLF Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (14.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.002 · change: -0.001
Affected products
- Joomla Joomla\!
- Joomla! Project Cms — versions 3.0.0-5.4.6, 6.0.0-6.1.2
Weakness classification (CWE)
References
- www.joomla.org/ (Product, product)
- developer.joomla.org/security-centre/1068-20260801-core-response-header-injecti… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-71572?
- CVE-2026-71572 is a medium-severity vulnerability in Joomla Joomla\!, classified under CRLF Injection. CVSS score: 5.4/10. Published 2026-08-18.
- How severe is CVE-2026-71572?
- Medium severity. CVSS v3 base score is 5.4 out of 10.