CVE-2026-4313 Stored XSS in AdaptiveGRC
Authenticated attackers can inject malicious scripts into text fields, leading to arbitrary JavaScript execution and potential administrative privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-4313?
CVE-2026-4313 is a low-severity cross-site scripting vulnerability in C&F AdaptiveGRC, published on 24 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
AdaptiveGRC is vulnerable to Stored XSS via text type fields across the forms. Authenticated attacker can replace the value of the text field in the HTTP POST request. Improper parameter validation by the server results in arbitrary JavaScript execution in the victim's browser. Critically, this may allow the attacker to obtain the administrator authentication token and perform arbitrary actions with administrative privileges, which could lead to further compromise.
This issue occurs in versions released before December 2025.
Weakness: CWE-79
Which versions are affected by CVE-2026-4313?
How do I fix CVE-2026-4313?
No fix has been published for CVE-2026-4313 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-2026-4313 being exploited?
There is no known exploitation of CVE-2026-4313 in the wild and no public exploit code.
Sources
Also known as GHSA-r3x8-5j74-9fg2.