CVE-2026-1645 Cross-site scripting in Hostel
Administrators can inject scripts via currency settings in the Hostel WordPress plugin, affecting multi-site or restricted HTML environments.
- 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-2026-1645?
CVE-2026-1645 is a medium-severity cross-site scripting vulnerability in prasunsen Hostel, published on 22 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The Hostel plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'custom_currency' parameter and the 'locale_url' setting in all versions up to, and including, 1.1.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Weakness: CWE-79
Which versions are affected by CVE-2026-1645?
How do I fix CVE-2026-1645?
No fix has been published for CVE-2026-1645 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-1645 being exploited?
There is no known exploitation of CVE-2026-1645 in the wild and no public exploit code.
Sources
Also known as GHSA-mcmf-59wf-8rxx.