CVE-2026-72553 ElkArte Forum ElkArte - Cross-Site Scripting
Stored XSS in ElkArte Forum allows registered users to inject JavaScript into profile fields, potentially hijacking admin sessions and escalating privileges.
- 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-2026-72553?
CVE-2026-72553 is a medium-severity cross-site scripting vulnerability in ElkArte, published on 11 Aug 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
A stored cross-site scripting vulnerability in ElkArte Forum 2.0 Beta 1 allows any registered member to inject persistent JavaScript into the profile fields cust_blurb and cust_locate. The fields are saved without HTML encoding and rendered unescaped in profile views visible to administrators. An attacker can craft a payload that executes in an administrator session, enabling session hijacking or privilege escalation.
Weakness: CWE-79
Which versions are affected by CVE-2026-72553?
How do I fix CVE-2026-72553?
No fix has been published for CVE-2026-72553 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-2026-72553 being exploited?
There is no known exploitation of CVE-2026-72553 in the wild and no public exploit code.
Sources
Also known as GHSA-7g6m-7cgf-xmj8.