CVE-2026-103904

Stored XSS Vulnerability in JTL-Shop

Published Oct 14, 2026 CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed
Description
The public consent endpoint of JTL-Shop accepts arbitrary
consent names from unauthenticated visitors without validating
them against the configured consent items. These names are stored in the consent
statistics and rendered without output encoding in the administration
backend. An unauthenticated remote attacker can thereby inject script code that
is executed in the browser session of an administrator viewing the consent
statistics page, allowing actions to be performed with the administrator's
privileges.

Remediation

Vendor Solution

Manual patches will be published for older unsupported versions (5.4.x and 5.5.x).

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description The public consent endpoint of JTL-Shop accepts arbitrary consent names from unauthenticated visitors without validating them against the configured consent items. These names are stored in the consent statistics and rendered without output encoding in the administration backend. An unauthenticated remote attacker can thereby inject script code that is executed in the browser session of an administrator viewing the consent statistics page, allowing actions to be performed with the administrator's privileges.
Title Stored XSS Vulnerability in JTL-Shop
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 9.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N'}

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
ENISA
Published
Updated
Oct 14, 2026, 2:11 PM
Reserved
Oct 1, 2026, 2:12 PM
Status
Deferred
Published
Oct 14, 2026, 11:16 AM
Modified
Oct 16, 2026, 8:04 PM