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Authorization bypass in WordPress Event post plugin

Priority LOW 28CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

The NOUS Ouvert Utile et Simple Event post plugin, from n/a through 6.1.1, contains an authorization bypass through a user-controlled key (CWE-639). A low-privileged user with network access can bypass access checks and change data they should not be able to modify, with high integrity impact and no confidentiality or availability impact.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Authorization Bypass Through User-Controlled Key vulnerability in NOUS Ouvert Utile et Simple Event post event-post allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Event post: from n/a through 6.1.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00195 9th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NOUS Ouvert Utile et SimpleEvent postup to 6.1.1—No fix listedCNA

Remediation

The sources list no fixed version for Event post.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-107427
  2. 2026-10-12 Alias added: GHSA-8fmg-r3r7-mx7j
  3. 2026-10-12 CISA SSVC decision points changed
  4. 2026-10-12 Priority changed: MEDIUM → LOW

References

  • TI-2026-70900 Missing authorization in WordPress Event post plugin CVSS 3.1MEDIUM 5.4

Sources