CVE-2026-121733

MEDIUM 5.4

Bagisto before 2.4.5 Stored XSS via RMA Conversation Attachment Upload

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-434
Vendor	webkul
Product	bagisto
Published	Nov 3, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Webkul / Bagisto

0 < 2.4.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/bagisto/bagisto/commit/204e43c26705b66ef2ddfb2a9eebb25f5e8f6a2c github.com: https://github.com/bagisto/bagisto github.com: https://github.com/bagisto/bagisto/commit/e28db3e8c53a94a99cf153ac338466720acd9004 github.com: https://github.com/bagisto/bagisto/blob/v2.4.4/packages/Webkul/Shop/src/Http/Controllers/Customer/Account/RMAController.php#L408 github.com: https://github.com/bagisto/bagisto/releases/tag/v2.4.5 vulncheck.com: https://www.vulncheck.com/advisories/bagisto-before-2.4.5-stored-xss-via-rma-conversation-attachment-upload

Credits

Muhammad Shariff Devansh Bawari