CVE-2026-85574 Unbounce Landing Pages 1.1.1 - 1.1.4 - Subscriber+ Reverse-Proxy Target Hijack via set_unbounce_domains
Authenticated users can hijack the reverse-proxy target to serve arbitrary content from the site's origin due to missing authorization checks.
- 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-2026-85574?
CVE-2026-85574 is a high-severity missing authorization vulnerability in Unknown Unbounce Landing Pages, published on 19 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 Unbounce Landing Pages WordPress plugin before 1.1.5 does not perform any authorisation check when updating the configuration its front-end proxy relies on, allowing any authenticated user, such as a subscriber, to point that proxy at a host they control and have arbitrary content served from the site's own origin.
Weakness: CWE-862
Which versions are affected by CVE-2026-85574?
How do I fix CVE-2026-85574?
No fix has been published for CVE-2026-85574 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-2026-85574 being exploited?
There is no known exploitation of CVE-2026-85574 in the wild and no public exploit code.
Sources
Also known as GHSA-jqrj-3hxj-9rmf.