CVE-2026-3457: Stored XSS vulnerability in Sentinel ACC

Severity: medium (CVSS 6.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-27 · updated 2026-10-26
Weakness: CWE-79

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.

Affected products

Thalesgroup Sentinel LDK Runtime: before 10.22 — fixed in 10.22

How to fix

Upgrade to a fixed version: Thalesgroup Sentinel LDK Runtime 10.22. Check the vendor advisory for mitigations.

References

https://supportportal.thalesgroup.com/csm?id=kb_article_view&sys_kb_id=5c18186b478aa950128dca72e36d4391&sysparm_article=KB0027106

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