VulnSocial

CVE-2026-19423Patch

LOWCVSS 8.1 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

The Ultimate Member WordPress plugin before 2.13.0 does not validate a submitted role selection when it cannot resolve the set of roles a profile form permits, and screens the value against the site's registered role names rather than against the form's own allow-list, allowing unauthenticated users who register through the Ultimate Member WordPress plugin before 2.13.0's own form to grant themselves arbitrary capabilities and reach administrator-equivalent access.

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0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-269

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-08-29); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-08-29: 1Mentions · 2026-09-08: 1Patch / Workaround · 2026-08-29: 1Technical Details · 2026-08-29: 1Technical Details · 2026-09-08: 108-2909-08
Signal classification2 categories
Patch
150.0%
Disclosure
150.0%
Referenced assets1 URL
By indicator
Classification over time
DateTotalLabels
2026-08-291
Patch1
2026-09-081
Disclosure1
Full discourse2 posts
  • DEGEN 👑@iamjustape
    Disclosure

    Good morning. Ultimate Member CVE-2026-19423: public registrants can self-assign elevated roles because the plugin checks the wrong reference list No exploit needed. Just a form field with the wrong validation If you run membership sites, check this today Have a good Tuesday.

    Post summary

    The post announces that public registrants can self‑assign elevated roles in the Ultimate Member plugin due to incorrect reference list validation (CVE‑2026‑19423), with no exploit code, patch, or evidence of active exploitation provided.

    0001057
    4.0K followersView on X
  • ADK Cyber@ADKCyber
    Patch

    CVE-2026-19423 (CVSS 8.1): Ultimate Member WordPress plugin <2.13.0 fails to validate role selection. Update promptly if in use. https://nvd.nist.gov/vuln/detail/CVE-2026-19423 via NVD Recent High CVSS #CyberSecurity #InfoSec #Vulnerability #AI #MachineLearning https://t.co/6dPXUHNBfZ

    Post summary

    The post announces a CVE in the Ultimate Member WordPress plugin, details a role‑validation flaw with CVSS 8.1, and urges users to update to a fixed version.

    0000052
    95 followersView on X

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