CVE-2026-103904 JTL-Shop - Stored XSS

JTL-Shop contains a stored XSS vulnerability caused by lack of validation and output encoding of arbitrary consent names in the public consent endpoint, letting unauthenticated remote attackers execute script code in administrator sessions, exploit requires administrator to view consent statistics page.

CVSS base score 9.3 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Stored XSS
Impact
Stored XSS
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Update to the latest version with proper input validation and output encoding for consent names.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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