CVE-2026-121733— Bagisto before 2.4.5 Stored XSS via RMA Conversation Attachment Upload

Quick assessment

Affected

Webkul Bagisto

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Bagisto 2.4.5 之前的版本存在存储型跨站脚本（Stored XSS）漏洞。该漏洞允许已认证的客户通过 RMA 发送消息接口上传 HTML 文件，且该接口未对文件类型或扩展名进行验证。攻击者可上传包含 JavaScript 代码的 .html 附件，该附件将托管在 /storage/rma-conversation/ 目录下。当管理员访问该附件时，脚本将在商店的源域名下执行。

CVSS 5.4 · Medium Updated Nov 04, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Get alerts for future matching vulnerabilities Log in to subscribe

Vulnerability Information

Have questions about the vulnerability? See if Shenlong's analysis helps!

View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title

Bagisto before 2.4.5 Stored XSS via RMA Conversation Attachment Upload

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

危险类型文件的不加限制上传

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Webkul	Bagisto	0 ~ 2.4.5	-

II. Public POCs for CVE-2026-121733

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-121733

请登录查看更多情报信息。

Other References for CVE-2026-121733 (6)

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

https://www.cve.org/CVERecord?id=CVE-2026-121733

IV. Related Vulnerabilities

Same product: Bagisto

Same vendor: Webkul

Same weakness: CWE-434