CVE-2026-19453 JetBackup 3.1.7.9 - 3.1.23.3 - Subscriber+ Privilege Escalation via Restore Admin User Selection
A subscriber can gain administrator privileges after a site restore or migration due to missing role verification in JetBackup.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-19453?
CVE-2026-19453 is a high-severity vulnerability in Unknown JetBackup, published on 2 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The JetBackup WordPress plugin before 3.1.23.5 does not verify the role or capabilities of the account it preserves across a restore or migration before granting it administrator privileges, allowing a subscriber-level user to gain administrator access after the site owner restores or migrates the site.
Weakness: CWE-269
Which versions are affected by CVE-2026-19453?
How do I fix CVE-2026-19453?
No fix has been published for CVE-2026-19453 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-19453 being exploited?
There is no known exploitation of CVE-2026-19453 in the wild and no public exploit code.
Sources
Also known as GHSA-qpph-f397-9mqv.