4.3

CVE-2026-89007: unknown bookit — booking & appointment calendar Missing Authorization

CVSS: 4.3v3.1MediumDeferred
Published 18-09-2026Last modified 18-09-2026
Open JSON

Vulnerability summary

CVE-2026-89007 is a medium (CVSS 4.3) Missing Authorization vulnerability in unknown bookit — booking & appointment calendar. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 19.4% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 2.6.0.5.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (wordfence)
EPSS score
0.28%
0%100%
Low · +0.11 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 18-09-2026
    PublishedVulnerability first disclosed.
  2. 18-09-2026
    Last modifiedVulnerability information updated.

Description

The Bookit — Booking & Appointment Calendar WordPress plugin before 2.6.0.5 does not perform a capability check in one of its appointment-deletion functions, allowing users with its low-privileged custom Staff role to delete arbitrary appointments.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

19%

Versus all other CVEs

30-day change

+0.11 pp

From 0.17% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.28%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Unknown1 product
Wordpress1 product
  • bookit≤ 2.6.0.4 (fixed in 2.6.0.5)

2 vendors · 2 products

References

2 links