Frappe up to 14.100.0/15.99.x/16.5.x Request server-side request forgery

Summaryinfo

A vulnerability was found in Frappe up to 14.100.0/15.99.x/16.5.x. It has been classified as critical. Impacted is an unknown function of the component Request Handler. This manipulation causes server-side request forgery. The identification of this vulnerability is CVE-2026-31878. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Frappe up to 14.100.0/15.99.x/16.5.x and classified as critical. Affected by this vulnerability is an unknown code block of the component Request Handler. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Frappe is a full-stack web application framework. Prior to 14.100.1, 15.100.0, and 16.6.0, a malicious user could send a crafted request to an endpoint which would lead to the server making an HTTP call to a service of the user's choice. This vulnerability is fixed in 14.100.1, 15.100.0, and 16.6.0.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-31878 since 03/09/2026. The exploitation appears to be easy. The attack can be launched remotely. Neither technical details nor an exploit are publicly available.

Upgrading to version 14.100.1, 15.100.0 or 16.6.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-11290). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• Frappe

Version

• 14.100
• 15.0
• 15.1
• 15.2
• 15.3
• 15.4
• 15.5
• 15.6
• 15.7
• 15.8
• 15.9
• 15.10
• 15.11
• 15.12
• 15.13
• 15.14
• 15.15
• 15.16
• 15.17
• 15.18
• 15.19
• 15.20
• 15.21
• 15.22
• 15.23
• 15.24
• 15.25
• 15.26
• 15.27
• 15.28
• 15.29
• 15.30
• 15.31
• 15.32
• 15.33
• 15.34
• 15.35
• 15.36
• 15.37
• 15.38
• 15.39
• 15.40
• 15.41
• 15.42
• 15.43
• 15.44
• 15.45
• 15.46
• 15.47
• 15.48
• 15.49
• 15.50
• 15.51
• 15.52
• 15.53
• 15.54
• 15.55
• 15.56
• 15.57
• 15.58
• 15.59
• 15.60
• 15.61
• 15.62
• 15.63
• 15.64
• 15.65
• 15.66
• 15.67
• 15.68
• 15.69
• 15.70
• 15.71
• 15.72
• 15.73
• 15.74
• 15.75
• 15.76
• 15.77
• 15.78
• 15.79
• 15.80
• 15.81
• 15.82
• 15.83
• 15.84
• 15.85
• 15.86
• 15.87
• 15.88
• 15.89
• 15.90
• 15.91
• 15.92
• 15.93
• 15.94
• 15.95
• 15.96
• 15.97
• 15.98
• 15.99
• 16.0
• 16.1
• 16.2
• 16.3
• 16.4
• 16.5

Website

• Product: https://github.com/frappe/frappe/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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