CVE-2026-62990 Shopper - Stored XSS & Privilege Escalation

Shopper 2.0.0 to < 2.10.1 and 3.0.0-beta.1/beta.2 contain a stored XSS caused by executable media upload with insufficient MIME restrictions, letting authenticated back-office staff with content-upload permission execute scripts in admin sessions, exploit requires the administrator to open the uploaded file.

CVSS base score 8.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.24% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Stored XSS, Privilege Escalation, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Published
30 October 2026
Updated
1 November 2026
Weakness
CWE-79

Vendor fix

Update to versions 2.10.1 or 3.0.0-beta.3 or later.

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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