High severity · published Apr 1, 2026
CVE-2026-34748
@payloadcms/next has Stored XSS in Admin Panel
8.7
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
payload · payloadcms
< 3.78.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34748
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-34748
Mitigation
https://github.com/payloadcms/payload/security/advisories/GHSA-mmxc-95ch-2j7c
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