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MEDIUM: 4.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:NDefault status
unaffected
3.0.0 (semver) before 5.13.3
affected
Description
Blesta 3.x through 5.x before 5.13.3 mishandles input validation, aka CORE-5665.
Problem types
CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Product status
3.0.0 (semver) before 5.13.3
References
seclists.org/fulldisclosure/2026/Feb/0
www.blesta.com/2026/01/28/security-advisory/