CVE-2026-39353: File Inclusion (CVSS 9.1)

Description

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. Prior to 1.7.2-rc-1, InvoicePlane builds its permitted template list by scanning a PHP template directory that can be written through an administrator-controlled file-write capability. A malicious PHP file placed in the directory is automatically trusted by Mdl_templates and can be selected as public_invoice_template. When a public invoice is rendered, the guest View controller includes the trusted file and executes it with web-server privileges. This issue is fixed in version 1.7.2-rc-1.

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CVSS v3.1 Score

9.1

CRITICAL

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

EPSS — Exploit Prediction

0.0045

Probability of exploitation

0.38%

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-98 CWE-98

CWE-693 CWE-693

CWE-732 CWE-732

References

Other References

https://github.com/InvoicePlane/InvoicePlane/commit/00e599db25804024eb323cfb751349bf3b1d8e8a https://github.com/InvoicePlane/InvoicePlane/pull/1536 https://github.com/InvoicePlane/InvoicePlane/releases/tag/v1.7.2-rc-1 https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-v735-2x3r-gwpp https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-v735-2x3r-gwpp

Frequently Asked Questions

What is CVE-2026-39353? +

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. Prior to 1.7.2-rc-1, InvoicePlane builds its permitted template list by scanning a PHP template directory that can be written through an administrator-controlled file-write capability. A malicious PHP file placed in the directory is automatically trusted by Mdl_templates and can be selected as public_invoice_template. When a public invoice is rendered, the guest View controller includes the trusted file and executes it with web-server privileges. This issue is fixed in version 1.7.2-rc-1. It has a CVSS v3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2026-39353? +

CVE-2026-39353 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0045, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-39353? +

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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