Medium severity · published Oct 6, 2026
CVE-2026-105846
Payload: Untrusted redirect URL parameter exploit
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
Payload is a free and open source headless content management system. In versions from 3.40.0 before 3.88.0 and canary versions before 4.0.0-canary.27, an attacker can craft a redirect URL parameter that sends a guest user to an untrusted destination after the authentication flow completes. This issue is fixed in versions 3.88.0 and 4.0.0-canary.27.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
next · @payloadcms
>= 3.31.0, < 3.88.0; >= 4.0.0-canary.0, < 4.0.0-canary.27 · source: vendor
PA
payload · payloadcms
>= 3.40.0, < 3.88.0; >= 4.0.0-canary.0, < 4.0.0-canary.27 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105846
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105846
x_refsource_CONFIRM
https://github.com/payloadcms/payload/security/advisories/GHSA-w84c-53h3-mc2g
x_refsource_MISC
https://github.com/payloadcms/payload/commit/a742140ab4fca3160f7f83e9e7d996552ffc3b5a
x_refsource_MISC
https://github.com/payloadcms/payload/releases/tag/v3.88.0