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ID:12796 - Exploit for CRLF injection in OPNsense - CVE-2026-57154
ID:12796 - Exploit for CRLF injection in OPNsense - CVE-2026-57154
Published: July 3, 2026
Vulnerability identifier: #VU136832
Vulnerability risk: Medium
CVE-ID: CVE-2026-57154
CWE-ID: CWE-93
Exploitation vector: Remote access
Vulnerable software:
OPNsense
OPNsense
Link to public exploit:
Vulnerability description
The vulnerability allows a remote attacker to inject arbitrary data in server response.
The vulnerability exists due to insufficient validation of attacker-supplied data within multiple GUI text fields. A remote user can pass specially crafted data to the application containing CR-LF characters and modify application behavior.
Remediation
Install updates from vendor's website.