CVE-2026-82634: Auth Bypass (CVSS 6.5)

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.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0024

Probability of exploitation

0.15%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-863 Incorrect Authorization

References

Other 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

Frequently Asked Questions

What is CVE-2026-82634? +

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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-82634? +

CVE-2026-82634 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0024, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-82634? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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