CVE-2025-40730 HTML injection in Vox Media's Chorus CMS
Attackers can execute JavaScript via malicious URLs in the search parameter, potentially stealing session cookies or performing actions on behalf of users.
- 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-2025-40730?
CVE-2025-40730 is a medium-severity cross-site scripting vulnerability in Vox Media Chorus CMS, published on 28 Jul 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
HTML injection in Vox Media's Chorus CMS. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending them a malicious URL using the 'q' parameter in '/search'. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.
Weakness: CWE-79
Which versions are affected by CVE-2025-40730?
How do I fix CVE-2025-40730?
No fix has been published for CVE-2025-40730 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-2025-40730 being exploited?
There is no known exploitation of CVE-2025-40730 in the wild and no public exploit code.
Sources
Also known as GHSA-m5fx-pj87-fhww.