EUVD-2026-72701
GHSA-pqcg-gw2f-rqp8
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Subscriber authentication required (PR:L); impact confined to forced plugin updates with no confidentiality exposure and only limited integrity and availability disruption.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
3DescriptionCVE.org
The Online Scheduling and Appointment Booking System - Bookly plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'updateAddon' function in all versions up to, and including, 27.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update any plugin with a main file of 'main.php' to its latest version.
AnalysisAI
Unauthorized plugin update execution in the Bookly scheduling plugin for WordPress (all versions through 27.2) allows any authenticated Subscriber-level user to force co-installed plugins whose main entry point is named main.php to update to their latest version, bypassing WordPress's standard update_plugins capability gate. The root cause is a missing capability check (CWE-862) on the updateAddon function in lib/PluginsUpdater.php, as identified by Wordfence and confirmed by the WordPress plugin SVN diff. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid WordPress user account with at least Subscriber-level access - the lowest role assignable upon registration on sites with open registration. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.4 Medium score (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L) reflects a realistic calibration: the attack is network-reachable and low-complexity, but the actual impact of a forced plugin update is bounded - no arbitrary code can be injected directly via this function alone. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Update the Bookly plugin beyond version 27.2 immediately; the upstream fix is captured in WordPress plugin SVN changeset 3504922 at https://plugins.trac.wordpress.org/changeset/3504922/, which adds the missing capability check to `updateAddon`. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
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External POC / Exploit Code
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