What’s Vulnerable › Vulnerabilities

CVE-2026-111388: Frappe before 16.33.0 restrict_ip Allowlist Bypass via API Key, OAuth Authentication

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-16 · updated 2026-10-16
• Weakness: CWE-284

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.

Affected products

• frappe: from 16.0.0 before 16.33.0; before 15.120.0 — fixed in 15.120.0, 16.33.0

How to fix

Upgrade to a fixed version: frappe 15.120.0, 16.33.0. Check the vendor advisory for mitigations.

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

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