Event Monitor Cyber
EM-20261109-JOFT VulnerabilityCritical severity

Critical WP Duplicate Vulnerability (CVE-2026-123751)

CVE-2026-123751

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55 hours from first report to confirmed exploitation.

Status
Confirmed

Since : exploitation in the wild reported.

First Signal
Nov 07 00:00 UTCC30 VulnCheck KEV
Page Born
Nov 09 07:17 UTCsecond source joined
Last Signal
Nov 09 07:17 UTC4 days before snapshot
Sources
20 official · 2 research, news or crowd
Open For
6 daysso far

Life Of This Page

  1. 1
    Born
    A second, independent source names it.
  2. 2
    Developing
    New signals join; severity can move.
  3. 3
    Confirmed · Now
    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 07:17 UTC
    C6 NVD published
  2. Scored: reached
    Nov 09 07:17 UTC
    CVSS 9.8 · EPSS 0.3%
  3. Exploited: reached
    Nov 09 07:17 UTC
    C6 reports use in the wild
  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 712:00Nov 812:00Nov 912:00BornC30 VulnCheck KEVC6 NVD CVE API 2.0

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

Signals

  1. CVE-2026-123751 (CVSS 9.8) (opens source in a new tab) The WP Duplicate WordPress plugin through 1.1.11 does not properly verify a request authentication value and does not validate the path or type of uploaded files, making it possible for unauthenticated attackers to… Crit severityDatabaseC6 NVD CVE API 2.0
  2. CVE-2026-123751 known exploited (VulnCheck KEV): revmakx wp_duplicate Unrestricted Upload of File with Dangerous Type (opens source in a new tab) The WP Duplicate WordPress plugin through 1.1.11 does not properly verify a request authentication value and does not validate the path or type of uploaded files, making it possible for unauthenticated attackers to… High severityResearch & NewsC30 VulnCheck KEV