CVE-2025-29156 Cross-site scripting in n/a
A remote attacker can execute arbitrary code via a crafted script in the petstore application's pet API endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-29156?
CVE-2025-29156 is a medium-severity cross-site scripting vulnerability in n/a, published on 25 Sep 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Cross Site Scripting vulnerability in petstore v.1.0.7 allows a remote attacker to execute arbitrary code via a crafted script to the /api/v3/pet
Weakness: CWE-79
Which versions are affected by CVE-2025-29156?
It affects 1 product.
Products include Smartbear Swagger Petstore.
How do I fix CVE-2025-29156?
No fix has been published for CVE-2025-29156 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-2025-29156 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-29156 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-x4fm-c6x2-jhwc.