CVE-2026-34748

@payloadcms/next has Stored XSS in Admin Panel

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.

Affected

payloadcms · payload

CVSS v3.1 GITHUB

8.7 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

EPSS

0.36% chance of exploitation in the next 30 days, 28th percentile

Published

2026-04-01

Updated

2026-04-02

Proof-of-concept exploits (1)

• payloadcms/payload/security/advisories/GHSA-mmxc-95ch-2j7c

Security advisories

• advisories/GHSA-mmxc-95ch-2j7c

References

• CVE Record
• NVD entry