CVE-2026-119409

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    CVE-2026-119409

    Published: 30 Oct 2026Last Modified: 1 Nov 2026

    Summary: OPNsense before 26.7.8 Root Command Injection via Firmware Mirror Setting

    Details: OPNsense before 26.7.8 contains a command injection vulnerability that allows authenticated users with the System: Firmware privilege to execute commands as root by storing a malicious firmware mirror URL. Attackers can submit shell metacharacters through POST /api/core/firmware/set that opnsense-update evaluates with eval, and can also disable package signature verification through sed injection.

    References: https://abraxaslabs.tech/research/opnsense-firmware-mirror-sed, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119409.json, https://github.com/opnsense/core/security/advisories/GHSA-p683-f7x2-pm4p, https://nvd.nist.gov/vuln/detail/CVE-2026-119409, https://www.vulncheck.com/advisories/opnsense-before-26.7.8-root-command-injection-via-firmware-mirror-setting, https://github.com/opnsense/core/commit/1cc41fc39da99d59818c789b3b561f1515126f47, https://github.com/opnsense/core/commit/8e214533d33c3af7481e86f616ee615adc6a0a73, https://github.com/opnsense/update/commit/9bfd3b7020499b6032ee64804193a9f3ce8178fa, https://github.com/opnsense/core, https://github.com/opnsense/update/blob/a2b8a10ba85f13b2cd002abb4c8692dde99f0261/src/update/opnsense-update.sh.in#L165

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -96978001a8343669154e4492172ce0a07dac7e4b

    Affected versions

    26.7.7
    26.7.6
    26.7.5
    26.7.4
    26.7.3
    26.7.2
    26.7.1
    26.7
    26.7.r2
    26.7.r1
    26.7.r
    26.7.b
    26.7.a

    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
    CVE-2026-119409 | CVE-DB