XSS in Thales Sentinel Ldk Runtime

CVE-2026-3457

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N.

EPSS exploit prediction

EPSS: 0.002 (6.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-3457: held from 0.001 to 0.002.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-3457?
CVE-2026-3457 is a medium-severity vulnerability in Thales Sentinel Ldk Runtime, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-03-27.
How severe is CVE-2026-3457?
Medium severity. CVSS v3 base score is 6.8 out of 10.