Critical severity · published Oct 6, 2026
CVE-2026-105844
Payload: Prototype pollution in Payload Import Export plugin
9.3
CVSS
0.7%
EPSS
No
On KEV
Description
Payload is a free and open source headless content management system. In versions from 3.0.0 before 3.88.0 and canary versions before 4.0.0-canary.27, an unauthenticated user can submit prototype-sensitive field paths when @payloadcms/plugin-import-export is enabled, causing unintended application behavior that can lead to remote code execution. This issue is fixed in versions 3.88.0 and 4.0.0-canary.27.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
payload · payloadcms
>= 3.0.0, < 3.88.0; >= 4.0.0-canary.0, < 4.0.0-canary.27 · source: vendor
PL
plugin-import-export · @payloadcms
>= 3.0.0, < 3.88.0; >= 4.0.0-canary.0, < 4.0.0-canary.27 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105844
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105844
x_refsource_CONFIRM
https://github.com/payloadcms/payload/security/advisories/GHSA-qf28-8hc6-vwrp
x_refsource_MISC
https://github.com/payloadcms/payload/commit/a742140ab4fca3160f7f83e9e7d996552ffc3b5a
x_refsource_MISC
https://github.com/payloadcms/payload/releases/tag/v3.88.0