Is CVE-2026-121733 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-121733?

CVE-2026-121733 has a CVSS v3 severity of MEDIUM (5.4).

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CVE-2026-121733

Description

Bagisto before 2.4.5 contains a stored cross-site scripting vulnerability that allows authenticated customers to upload HTML files via the RMA send-message endpoint without type or extension validation. Attackers can upload a .html attachment containing JavaScript served under /storage/rma-conversation/, executing script in the shop's origin when an administrator opens it.