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Vulnerability record · CVE-2026-104479 · published 3 October 2026

CVE-2026-104479: Cross-site scripting vulnerability

Shopclass before 6.2.0 contains a stored cross-site scripting vulnerability that allows self-registered non-admin users to inject scripts into item listing descriptions when frontend TinyMCE is enabled. Attackers can submit malicious JavaScript, which ItemActions.php saves without tag stripping, causing it to execute in the site origin for any visitor viewing the listing.

5.1 CVSS 4.0 Medium CWE-79 · Cross-site scripting Received
5.1CVSS 4.0 base score
-EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
3 Oct 2026Last modified by NVD

Description

Shopclass before 6.2.0 contains a stored cross-site scripting vulnerability that allows self-registered non-admin users to inject scripts into item listing descriptions when frontend TinyMCE is enabled. Attackers can submit malicious JavaScript, which ItemActions.php saves without tag stripping, causing it to execute in the site origin for any visitor viewing the listing.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/mindstellar/shopclass
https://github.com/mindstellar/shopclass/commit/c196f70906522c9b9172c24f1b42cd0a02357422
https://www.vulncheck.com/advisories/shopclass-before-6.2.0-stored-xss-via-listing-description-field

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Source: NIST National Vulnerability Database (record CVE-2026-104479), CISA KEV, FIRST EPSS. This page is refreshed as NVD updates the record.