CVE-2026-27377 WordPress QuickCal - Appointment Booking Calendar for WordPress plugin <= 1.0.16 - Broken Access Control vulnerability
Attackers can bypass access controls to perform unauthorized actions as a Booking Agent in the QuickCal WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-27377?
CVE-2026-27377 is a medium-severity missing authorization vulnerability in axiomthemes QuickCal - Appointment Booking Calendar for WordPress, published on 23 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Booking Agent Broken Access Control in QuickCal - Appointment Booking Calendar for WordPress <= 1.0.16 versions.
Weakness: CWE-862
Which versions are affected by CVE-2026-27377?
How do I fix CVE-2026-27377?
No fix has been published for CVE-2026-27377 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-27377 being exploited?
There is no known exploitation of CVE-2026-27377 in the wild and no public exploit code.
Sources
Also known as GHSA-r5c7-h5q4-cjrc.