CVE-2026-86827 BackWPup 3.3 - 5.7.6 - Unauthenticated Backup Job Execution via wp-cron.php
Unauthenticated attackers can force immediate execution of backup jobs, potentially causing resource exhaustion or exposing sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86827?
CVE-2026-86827 is a medium-severity missing authorization vulnerability in Unknown BackWPup, published on 8 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The BackWPup WordPress plugin before 5.7.7 does not verify that a request to its cron-triggered backup execution handler actually originates from WordPress's internal scheduled-event dispatch, allowing unauthenticated attackers to force any existing backup job to run immediately, independent of its configured trigger type or schedule.
Weakness: CWE-862
Which versions are affected by CVE-2026-86827?
How do I fix CVE-2026-86827?
No fix has been published for CVE-2026-86827 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-2026-86827 being exploited?
There is no known exploitation of CVE-2026-86827 in the wild and no public exploit code.
Sources
Also known as GHSA-pcfw-vf4c-h2h5.