What’s Vulnerable › Vulnerabilities

CVE-2023-54406: Frappe before 14.59.0 Safe Execution Flag Bypass in Server Scripts

• Severity: medium (CVSS 4.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-12 · updated 2026-10-15
• Weakness: CWE-372

Description

Frappe before 14.59.0 and 15.x before 15.5.0 contains a sandbox flaw where the frappe.flags.in_safe_exec global flag can become False during Server Script execution when one server script triggers another. Authenticated high-privileged users can craft a Server Script that triggers other server scripts, such as by saving a document, so the remaining code runs without safe execution protections.

Affected products

• frappe: before 14.59.0; from 15.0.0 before 15.5.0 — fixed in 14.59.0, 15.5.0

How to fix

Upgrade to a fixed version: frappe 14.59.0, 15.5.0. Check the vendor advisory for mitigations.

References

• https://github.com/frappe/frappe/security/advisories/GHSA-v3vh-7qx4-f582
• https://www.vulncheck.com/advisories/frappe-before-14.59.0-safe-execution-flag-bypass-in-server-scripts

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