PayloadCMS up to 3.89.x/4.0.0-canary.33 plugin-form-builder code injection

Summaryinfo

A vulnerability was found in PayloadCMS up to 3.89.x/4.0.0-canary.33. It has been rated as critical. This vulnerability affects unknown code of the component plugin-form-builder. Performing a manipulation results in code injection. This vulnerability is identified as CVE-2026-105857. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in PayloadCMS up to 3.89.x/4.0.0-canary.33. This affects an unknown function of the component plugin-form-builder. The manipulation with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Payload is a free and open source headless content management system. In @payloadcms/plugin-form-builder versions before 3.90.0 and canary versions before 4.0.0-canary.34, an attacker can craft a form submission that executes code remotely on the server. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-105857 since 10/06/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

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

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• PayloadCMS

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

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

Discussion