CVE-2026-34748
High
Description
Payload is a free and open source headless content management system. Prior to version 3.78.0 in @payloadcms/next, a stored Cross-Site Scripting (XSS) vulnerability existed in the admin panel. An authenticated user with write access to a collection could save content that, when viewed by another user, would execute in their browser. This issue has been patched in version 3.78.0.
SeverityHigh
CVSS8.7
Exploit probability—
ProductPayload
PublishedApr 1, 2026
First seenApr 1, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- payloadcms payload3.78.0 or later
- @payloadcms/next3.78.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| payloadcms payload | v < 3.78.0 | 3.78.0 |
| @payloadcms/nextnpm | v < 3.78.0 | 3.78.0 |
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