High severity · published Oct 6, 2026
CVE-2026-105865
Payload: Incomplete validation during the upload file lifecycle
8.1
CVSS
0.4%
EPSS
No
On KEV
Description
Payload is a free and open source headless content management system. In versions before 3.90.0 and canary versions before 4.0.0-canary.34, an authenticated user who can update or delete uploads stored locally can cause file cleanup to remove unintended files outside the configured upload directory, resulting in data loss or service disruption. Deployments that restrict upload management to trusted users are less exposed. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
payload · payloadcms
< 3.90.0; >= 4.0.0-canary.0, < 4.0.0-canary.34 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105865
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105865
x_refsource_CONFIRM
https://github.com/payloadcms/payload/security/advisories/GHSA-p223-2wr2-j562
x_refsource_MISC
https://github.com/payloadcms/payload/commit/6b74418f628fa633c2f297e5919a9f91b383dc11
x_refsource_MISC
https://github.com/payloadcms/payload/releases/tag/v3.90.0
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