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    CVE-2021-42770

    A Cross-site scripting (XSS) vulnerability was discovered in OPNsense before 21.7.4 via the LDAP attribute return in the authentication tester.

    Published:Nov 8, 2021
    Last Modified:Nov 21, 2024
    EPS:Nov 8, 2021
    EPSS Score:0.02258
    CVSS Score:6.1

    Affected Products

    Vendor
    Opnsense
    Product
    Opnsense

    Exploits

    https://github.com/orangecertcc/security-research/security/advisories/GHSA-r32j-xgg3-w2rwhttps://github.com/orangecertcc/security-research/security/advisories/GHSA-r32j-xgg3-w2rw

    Related CVEs

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    CVE-2026-44194 (CVSS 9.1) — OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, an authenticated Remote Code Execu…
    CVE-2026-44195 (CVSS 5.3) — OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, a logic flaw in the OPNsense locko…
    CVE-2026-44193 (CVSS 9.1) — OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, the XMLRPC method opnsense.restore…
    CVE-2026-34578 (CVSS 8.2) — OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.6, OPNsense's LDAP authentication con…
    CVE-2026-30868 (CVSS 6.3) — OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.4, multiple OPNsense MVC API endpoint…
    CVE-2019-25377 (CVSS 4.8) — OPNsense 19.1 contains a reflected cross-site scripting vulnerability in the system_advanced_sysctl.php endpoi…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High