CVE-2026-40038 Pachno 1.0.6 Stored Cross-Site Scripting via Multiple Parameters
Attackers can inject malicious scripts into multiple parameters, leading to arbitrary code execution in victim browsers via stored XSS.
- 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-2026-40038?
CVE-2026-40038 is a medium-severity cross-site scripting vulnerability in Pachno, published on 13 Apr 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
Pachno 1.0.6 contains a stored cross-site scripting vulnerability that allows attackers to execute arbitrary HTML and script code by injecting malicious payloads into POST parameters. Attackers can inject scripts through the value, comment_body, article_content, description, and message parameters across multiple controllers, which are stored in the database and executed in users' browser sessions due to improper sanitization via Request::getRawParameter() or Request::getParameter() calls.
Weakness: CWE-79
Which versions are affected by CVE-2026-40038?
How do I fix CVE-2026-40038?
No fix has been published for CVE-2026-40038 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-2026-40038 being exploited?
There is no known exploitation of CVE-2026-40038 in the wild and no public exploit code.
Sources
Also known as GHSA-fpfp-p6p5-q4rm.