CVE-2025-61413 Piranha CMS vulnerable to stored cross-site scripting (XSS)

Medium 6.1 Published 23 Oct 2025 Updated 24 Oct 2025

Attackers can execute arbitrary scripts in Piranha CMS by injecting payloads into Markdown blocks within the page manager.

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-2025-61413?

CVE-2025-61413 is a medium-severity cross-site scripting vulnerability in n/a, published on 23 Oct 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

A stored cross-site scripting (XSS) vulnerability in the /manager/pages component of Piranha CMS v12.0 allows attackers to execute arbitrary web scripts or HTML via creating a page and injecting a crafted payload into the Markdown blocks.

Weakness: CWE-79

Which versions are affected by CVE-2025-61413?

2 open source packages ship an affected version, including Piranha. It affects 1 product.

Package	Affected	Fixed in
`Piranha` NuGet	All versions to `12.0.0`	None
`Piranha` NuGet	All versions to `12.0.0`	None

Products include Dotnetfoundation Piranha Cms.

How do I fix CVE-2025-61413?

No fix has been published for CVE-2025-61413 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-2025-61413 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-61413 exists.

Sources

Also known as GHSA-3qcp-9v8c-6jp7.