Payload CMS up to 3.89.x/4.0.0-canary.33 File Cleanup unrestricted upload

Summaryinfo

A vulnerability categorized as problematic has been discovered in Payload CMS Payload up to 3.89.x/4.0.0-canary.33. This issue affects some unknown processing of the component File Cleanup. Executing a manipulation can lead to unrestricted upload. This vulnerability is tracked as CVE-2026-105865. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Payload CMS Payload up to 3.89.x/4.0.0-canary.33. This vulnerability affects an unknown functionality of the component File Cleanup. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-105865 since 10/06/2026. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1608.002.

Upgrading to version 3.90.0 or 4.0.0-canary.34 eliminates this vulnerability.

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Productinfo

Type

• Content Management System

Vendor

• Payload CMS

Name

• Payload

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15
• 3.16
• 3.17
• 3.18
• 3.19
• 3.20
• 3.21
• 3.22
• 3.23
• 3.24
• 3.25
• 3.26
• 3.27
• 3.28
• 3.29
• 3.30
• 3.31
• 3.32
• 3.33
• 3.34
• 3.35
• 3.36
• 3.37
• 3.38
• 3.39
• 3.40
• 3.41
• 3.42
• 3.43
• 3.44
• 3.45
• 3.46
• 3.47
• 3.48
• 3.49
• 3.50
• 3.51
• 3.52
• 3.53
• 3.54
• 3.55
• 3.56
• 3.57
• 3.58
• 3.59
• 3.60
• 3.61
• 3.62
• 3.63
• 3.64
• 3.65
• 3.66
• 3.67
• 3.68
• 3.69
• 3.70
• 3.71
• 3.72
• 3.73
• 3.74
• 3.75
• 3.76
• 3.77
• 3.78
• 3.79
• 3.80
• 3.81
• 3.82
• 3.83
• 3.84
• 3.85
• 3.86
• 3.87
• 3.88
• 3.89
• 4.0.0-canary.0
• 4.0.0-canary.1
• 4.0.0-canary.2
• 4.0.0-canary.3
• 4.0.0-canary.4
• 4.0.0-canary.5
• 4.0.0-canary.6
• 4.0.0-canary.7
• 4.0.0-canary.8
• 4.0.0-canary.9
• 4.0.0-canary.10
• 4.0.0-canary.11
• 4.0.0-canary.12
• 4.0.0-canary.13
• 4.0.0-canary.14
• 4.0.0-canary.15
• 4.0.0-canary.16
• 4.0.0-canary.17
• 4.0.0-canary.18
• 4.0.0-canary.19
• 4.0.0-canary.20
• 4.0.0-canary.21
• 4.0.0-canary.22
• 4.0.0-canary.23
• 4.0.0-canary.24
• 4.0.0-canary.25
• 4.0.0-canary.26
• 4.0.0-canary.27
• 4.0.0-canary.28
• 4.0.0-canary.29
• 4.0.0-canary.30
• 4.0.0-canary.31
• 4.0.0-canary.32
• 4.0.0-canary.33

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