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Medium severity · published Mar 27, 2026
CVE-2026-3457
Stored XSS vulnerability in Sentinel ACC
6.8
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SL
Sentinel LDK Runtime · Thalesgroup
before 10.22 · source: vendor
Affected product
SL
Sentinel LDK Runtime
Thalesgroup
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3457
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3457
supportportal.thalesgroup.com
https://supportportal.thalesgroup.com/csm?id=kb_article_view&sys_kb_id=5c18186b478aa950128dca72e36d4391&sysparm_article=KB0027106