CVE-2026-109376: Auth Bypass (CVSS 4.3)

Description

ERPNext 15.55.0 through 16.50.0 contains an incorrect authorization vulnerability in the get_timesheet_html method that lets authenticated portal users view project Timesheets. The method only checks Project read access, ignoring hide_timesheets and project membership, so attackers can retrieve timesheet names, status, time-log dates and last modifiers.

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CVSS v3.1 Score

4.3

MEDIUM

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

EPSS — Exploit Prediction

0.0025

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/erpnext https://github.com/frappe/erpnext/blob/v16.50.0/erpnext/templates/pages/projects.py#L99-L106 https://github.com/frappe/erpnext/commit/eb217deef7bd407d34254aee3b3e175e4d357c90 https://github.com/frappe/erpnext/pull/60280 https://www.vulncheck.com/advisories/erpnext-15.55.0-through-16.50.0-incorrect-authorization-via-get-timesheet-html

Frequently Asked Questions

What is CVE-2026-109376? +

ERPNext 15.55.0 through 16.50.0 contains an incorrect authorization vulnerability in the get_timesheet_html method that lets authenticated portal users view project Timesheets. The method only checks Project read access, ignoring hide_timesheets and project membership, so attackers can retrieve timesheet names, status, time-log dates and last modifiers. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-109376? +

CVE-2026-109376 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0025, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-109376? +

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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