CVE-2026-48127: Frappe: Arbitrary Attachment Injection via add_attachments and upload_file

Severity: medium (CVSS 5.3 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-10 · updated 2026-07-14
Weakness: CWE-862

Description

Frappe is a full-stack web application framework. Prior to 16.20.0 and 15.110.0, users without write access could attach files to any doctype through file-handling API endpoints such as add_attachments. This issue is fixed in versions 16.20.0 and 15.110.0.

Affected products

frappe: before 15.110.0; from 16.0.0-beta.1, < 16.20.0

References

https://github.com/frappe/frappe/commit/4bf27db101c34bd542a760290fc0775efa5cd0e4
https://github.com/frappe/frappe/commit/b1c86042e6f85986f35365c80bb1d102ff1cd0e4
https://github.com/frappe/frappe/commit/fee1af6d89910f6b174fd094184060aeb641d07d
https://github.com/frappe/frappe/pull/39407
https://github.com/frappe/frappe/pull/39550
https://github.com/frappe/frappe/pull/39553
https://github.com/frappe/frappe/releases/tag/v15.110.0
https://github.com/frappe/frappe/releases/tag/v16.20.0
https://github.com/frappe/frappe/security/advisories/GHSA-fwrv-4rw4-97fw

Get alerted when CVE-2026-48127 or the next vulnerability affects your stack