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CVE-2026-44194

OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, an authenticated Remote Code Execution (RCE) vulnerability in the OPNsense core allows a user with user-management privileges to execute arbitrary system commands as root. An attacker can bypass input validation by formatting their malicious payload as a compliant email address, allowing shell commands to reach the underlying operating system. The flaw exists in the local user synchronization flow, within core/src/opnsen
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a55d4ed10d3f3d3b61b44b3f50f2a64d14f5f29445279cc747eaa7a8c4c5bb87
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"core","vendor":"opnsense","versions":[{"status":"affected","version":"< 26.1.8"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5ff25b20eec579e947fb07036253684d8a1087cdfaa7504f4d7933a755daf4d0 · sha256:26fd53b7411e5769… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5ff25b20eec579e947fb07036253684d8a1087cdfaa7504f4d7933a755daf4d0 · sha256:26fd53b7411e5769… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-78","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5ff25b20eec579e947fb07036253684d8a1087cdfaa7504f4d7933a755daf4d0 · sha256:26fd53b7411e5769… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/opnsense/core/security/advisories/GHSA-f59w-m967-9rf6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5ff25b20eec579e947fb07036253684d8a1087cdfaa7504f4d7933a755daf4d0 · sha256:26fd53b7411e5769… · /containers/adp/0/references/0
{"name":"https://github.com/opnsense/core/security/advisories/GHSA-f59w-m967-9rf6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/opnsense/core/security/advisories/GHSA-f59w-m967-9rf6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5ff25b20eec579e947fb07036253684d8a1087cdfaa7504f4d7933a755daf4d0 · sha256:26fd53b7411e5769… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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