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Privilege escalation in WP BASE Booking WordPress plugin

Priority MEDIUM 40CWE-266Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-266.

Summary

WP BASE Booking, a WordPress plugin by Hakan Ozevin, is affected through version 6.5.2. An incorrect privilege assignment (CWE-266) lets a user with the Subscriber role gain elevated privileges. A remote attacker with low privileges and no user interaction can fully compromise confidentiality, integrity and availability.

Written with Claude Haiku 5.5 from the sources below · 2026-10-31

Description from the CNA

Subscriber Privilege Escalation in WP BASE Booking <= 6.5.2 versions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0036 29th 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
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
Hakan OzevinWP BASE Bookingup to 6.5.2—No fix listedCNA
  • WP BASE Booking VendorHakan Ozevin Affected up to 6.5.2 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for WP BASE Booking.

Written with Claude Haiku 5.5 from the sources below · 2026-10-31

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-118086
  2. 2026-10-30 Alias added: GHSA-pxj4-565p-h4pr
  3. 2026-10-30 CISA SSVC decision points changed
  4. 2026-10-30 Priority changed: MEDIUM → LOW
  5. 2026-11-01 Priority changed: LOW → MEDIUM

References

  • TI-2026-44334 WordPress WP BASE Booking plugin <= 6.3.0 - Arbitrary Code Execution vulnerability CVSS 3.1CRITICAL 10.0
  • TI-2026-42504 WordPress WP BASE Booking plugin <= 6.3.1 - Privilege Escalation vulnerability CVSS 3.1HIGH 8.8
  • TI-2026-28561 WordPress WP BASE Booking plugin <= 5.9.0 - Privilege Escalation vulnerability CVSS 3.1HIGH 8.1
  • TI-2025-16566 WordPress WP BASE Booking plugin <= 5.0.0 - Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
  • TI-2026-51520 WordPress WP BASE Booking plugin <= 6.3.2 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 6.5

Sources