CVE-2026-82634: Frappe Framework Development Branch Incorrect Authorization via Jinja Template Preview Endpoint

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-30 · updated 2026-10-27
Weakness: CWE-863

Description

Frappe Framework development builds contain an authorization flaw in the render_jinja_template endpoint that allows low-privileged users to render arbitrary Jinja templates by supplying raw template strings. Attackers with print permission on any document can execute arbitrary SELECT statements against unrelated tables, including reading password hashes from the __Auth table.

References

https://github.com/frappe/frappe
https://github.com/frappe/frappe/blob/0a80046da32bb8976cd7854f551c179a4a06b1b3/frappe/utils/print_format_generator.py
https://github.com/frappe/frappe/commit/37d2eb59790633da01c741b950cc00ca3558c494
https://github.com/frappe/frappe/pull/40710
https://www.vulncheck.com/advisories/frappe-framework-development-branch-incorrect-authorization-via-jinja-template-preview-endpoint

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