{"id":"CVE-2026-119409","aliases":["EUVD-2026-113793","GHSA-p683-f7x2-pm4p","GHSA-q3x8-9859-gj9r"],"status":"published","title":"OPNsense before 26.7.8 Root Command Injection via Firmware Mirror Setting","description":"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.","severity":{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.02477,"percentile":0.84793,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2026-10-30T11:30:46Z","modified":"2026-11-01T02:47:29Z","products":[{"vendor":"opnsense","product":"core"}],"references":[{"url":"https://github.com/opnsense/core/security/advisories/GHSA-p683-f7x2-pm4p","tags":["vendor-advisory","advisory"]},{"url":"https://github.com/opnsense/core/commit/1cc41fc39da99d59818c789b3b561f1515126f47","tags":["patch","fix"]},{"url":"https://github.com/opnsense/core/commit/8e214533d33c3af7481e86f616ee615adc6a0a73","tags":["patch","fix"]},{"url":"https://github.com/opnsense/update/commit/9bfd3b7020499b6032ee64804193a9f3ce8178fa","tags":["patch","fix"]},{"url":"https://github.com/opnsense/update/blob/a2b8a10ba85f13b2cd002abb4c8692dde99f0261/src/update/opnsense-update.sh.in#L165","tags":["technical-description","article"]},{"url":"https://abraxaslabs.tech/research/opnsense-firmware-mirror-sed","tags":["third-party-advisory","advisory"]},{"url":"https://github.com/opnsense/core","tags":["product","package"]},{"url":"https://www.vulncheck.com/advisories/opnsense-before-26.7.8-root-command-injection-via-firmware-mirror-setting","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119409","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-q3x8-9859-gj9r"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119409.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-119409","title":"OPNsense before 26.7.8 Root Command Injection via Firmware Mirror Setting","description":"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.","status":"published","published":"2026-10-30T11:30:46.595Z","modified":"2026-10-30T15:55:57.541Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:20:10.143031Z"}],"euvd":[{"id":"EUVD-2026-113793","description":"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.","status":"published","published":"2026-10-30T11:30:46Z","modified":"2026-10-30T15:55:57Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T16:59:05.913237Z"}],"ghsa":[{"id":"GHSA-q3x8-9859-gj9r","title":"OPNsense before 26.7.8 contains a command injection vulnerability that allows authenticated users...","description":"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.","status":"published","published":"2026-10-30T12:31:17Z","modified":"2026-10-30T12:31:24Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:14:42.307242Z"}],"nvd":[{"id":"CVE-2026-119409","description":"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.","status":"published","published":"2026-10-30T12:16:37.51Z","modified":"2026-10-30T19:23:25.493Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:13:04.940026Z"}],"osv":[{"id":"CVE-2026-119409","title":"OPNsense before 26.7.8 Root Command Injection via Firmware Mirror Setting","description":"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.","status":"published","published":"2026-10-30T11:30:46.595Z","modified":"2026-11-01T02:47:29.854282869Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:44:57.008854Z"}]}}