CVE-2026-3457 Stored XSS vulnerability in Sentinel ACC
Stored XSS in Thales Sentinel LDK Runtime allows attackers to inject scripts, potentially leading to code execution or security bypass.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3457?
CVE-2026-3457 is a high-severity cross-site scripting vulnerability in Thalesgroup Sentinel LDK Runtime, published on 27 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Thales Sentinel LDK Runtime on Windows allows Stored XSS.
This issue affects Sentinel LDK Runtime: before 10.22.
Weakness: CWE-79
Which versions are affected by CVE-2026-3457?
How do I fix CVE-2026-3457?
No fix has been published for CVE-2026-3457 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-2026-3457 being exploited?
There is no known exploitation of CVE-2026-3457 in the wild and no public exploit code.
Sources
Also known as GHSA-p8p4-668f-3c4x.