Description
Beghelli Sicuro24 SicuroWeb does not enforce a Content Security Policy, allowing unrestricted loading of external JavaScript resources from attacker-controlled origins. When chained with the template injection and sandbox escape vulnerabilities present in the same application, the absence of CSP removes the browser-enforced restriction that would otherwise block external script execution, enabling attackers to load arbitrary remote payloads into operator browser sessions.
CVSS breakdown
CVSS 4.0
Attack Vector
Adjacent
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Passive
Confidentiality (Vulnerable System)
None
Integrity (Vulnerable System)
None
Availability (Vulnerable System)
None
Confidentiality (Subsequent System)
Low
Integrity (Subsequent System)
Low
Availability (Subsequent System)
None
CVSS 3.1
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected products
References
- MISChttps://www.boffsec-services.com/posts/sicuroweb-cve-2026-22191/
- MISChttps://github.com/kmkz/Exploits/blob/master/2026/CVE-2026-22191-POC.py
- MISChttps://github.com/kmkz/Exploits/blob/master/2026/CVE-2026-22191-SicuroWeb-ATI-chain.txt
- MISChttps://www.beghelli.it
- VENDOR_ADVISORYhttps://www.vulncheck.com/advisories/beghelli-sicuro24-sicuroweb-missing-content-security-policy