Event Monitor Cyber
EM-20261112-PL3S VulnerabilityCritical severity

Critical Signal K Server Vulnerability (CVE-2026-123807)

CVE-2026-123807

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Status
Developing

Since : signals keep joining.

First Signal
Nov 09 22:18 UTCC6 NVD CVE API 2.0
Page Born
Nov 12 07:12 UTCsecond source joined
Last Signal
Nov 12 07:12 UTC14 hours before snapshot
Sources
20 official · 2 research, news or crowd
Open For
3 daysso far

Life Of This Page

  1. 1
    Born
    A second, independent source names it.
  2. 2
    Developing · Now
    New signals join; severity can move.
  3. 3
    Confirmed
    Not yet
    CISA KEV lists it, or exploitation in the wild is reported.
  4. 4
    Resolved
    Not yet
    Past the fix deadline and 14 days with no new signal.
  5. 5
    Archived
    Not yet
    30 days after resolved. Read only; the link keeps working. Reopens if it comes back.

The ID never changes, and earlier addresses keep working. A correction is logged, never overwritten. If two pages turn out to be one incident, the later one points to the earlier.

Vulnerability Lifecycle

  1. Disclosed: reached
    Nov 09 22:18 UTC
    C6 NVD published
  2. Scored: reached
    Nov 09 22:18 UTC
    CVSS 9.8 · EPSS 0.5%
  3. Exploited: not yet
    Not yet
    No exploitation reported
  4. Advisories: not yet
    Not yet
    None yet
  5. Vendor Response: not yet
    Not yet
    None in sources yet
  6. Resolved: not yet
    Not yet
    After 14 quiet days

Timeline

Nov 1012:00Nov 1112:00Nov 1212:00BornC6 NVD CVE API 2.0C31 Vulners (new public exploits)

Point at a mark to read it. Squares are signals, colored by severity; every one is also listed under Signals.

Signals

  1. Public exploit: Exploit for CVE-2026-123807 (opens source in a new tab) # signalk-audit A tool for auditing and creating a proof-of-concept (PoC) for resource path traversal in Signal K Server. The URL `GET /signalk/v2/api/resources/:resourceType/:resourceId` allows `resourceId` to be… High severityResearch & NewsC31 Vulners (new public exploits)
  2. CVE-2026-123807 (CVSS 9.8) (opens source in a new tab) Signal K Server is a server application that runs on a central hub in a boat. From 2.0.0 until 2.34.0 for Signal K Server and from 1.0.0 until 1.5.3 for @signalk/resources-provider, the v2 REST route GET… Crit severityDatabaseC6 NVD CVE API 2.0