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CVE-2026-30868

🔶 medium
🔍 Scan for this CVE
Summary

OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.4, multiple OPNsense MVC API endpoints perform state‑changing operations but are accessible via HTTP GET requests without CSRF protection. The framework CSRF validation in ApiControllerBase only applies to POST/PUT/DELETE methods, allowing authenticated GET requests to bypass CSRF verification. As a result, a malicious website can trigger privileged backend actions when visited by an authenticated user, causing unintended s

Description

OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.4, multiple OPNsense MVC API endpoints perform state‑changing operations but are accessible via HTTP GET requests without CSRF protection. The framework CSRF validation in ApiControllerBase only applies to POST/PUT/DELETE methods, allowing authenticated GET requests to bypass CSRF verification. As a result, a malicious website can trigger privileged backend actions when visited by an authenticated user, causing unintended service reloads and configuration changes through configd. This results in an authenticated Cross‑Site Request Forgery vulnerability allowing unauthorized system state changes. This vulnerability is fixed in 26.1.4.

CVSS Score
6.3
Medium
EPSS Score
0.0
Exploit Probability
Published Date
2026-03-11
First Seen: 2026-03-12
📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 39.3% of all 328,009 vulnerabilities in our database.

#199,264
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Mar 11, 2026
🔍 Exploitation Status
Poc
Proof-of-concept available
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
SSVC data provided by CISA
Last Modified 2026-03-17
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L
CWE IDs (Weakness Types)
CWE-352

📦 Affected Products 1

Vendor Product Status Affected Versions
opnsense opnsense Affected
< 26.1.4

🔗 References 1

https://github.com/opnsense/core/security/advisories...
Exploit Mitigation Vendor Advisory

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-44193 ⛔ critical 9.1 0.3 OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, the XMLRPC method opnsense.restore_config_se... 2026-05-13
CVE-2026-44194 ⛔ critical 9.1 0.1 OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, an authenticated Remote Code Execution (RCE)... 2026-05-13
CVE-2026-44195 🔶 medium 5.3 0.1 OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, a logic flaw in the OPNsense lockout_handler... 2026-05-13
CVE-2026-45158 ⛔ critical 9.1 0.2 OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, unsanitized user input is passed to the DHCP... 2026-05-13
CVE-2026-34578 ⚠️ high 8.2 0.3 OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.6, OPNsense's LDAP authentication connector pas... 2026-04-09
CVE-2019-25368 🔶 medium 5.4 0.0 OPNsense 19.1 contains multiple cross-site scripting vulnerabilities in the diag_backup.php endpoint that allow attacker... 2026-02-15
These CVEs affect the same products