CVE-2025-53484 SecurePoll: Multiple locations vulnerable to Cross-Site Scripting (XSS) via unescaped input
Attackers can inject JavaScript via unescaped inputs in the SecurePoll extension, potentially compromising user sessions.
- 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-2025-53484?
CVE-2025-53484 is a critical cross-site scripting vulnerability in Wikimedia Foundation Mediawiki - SecurePoll extension, published on 4 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
User-controlled inputs are improperly escaped in:
* VotePage.php (poll option input)
* ResultPage::getPagesTab() and getErrorsTab() (user-controllable page names)
This allows attackers to inject JavaScript and compromise user sessions under certain conditions.
This issue affects Mediawiki - SecurePoll extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
Weakness: CWE-79
Which versions are affected by CVE-2025-53484?
How do I fix CVE-2025-53484?
No fix has been published for CVE-2025-53484 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-2025-53484 being exploited?
There is no known exploitation of CVE-2025-53484 in the wild and no public exploit code.
Sources
Also known as GHSA-m9g7-gvwq-v3g8.