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CVE-2026-23491

Invoiceplane path traversal

7.5 HIGHPublic exploitEPSS 4.31%
  1. Published18 Feb 2026

Description

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. A path traversal vulnerability exists in the `get_file` method of the `Guest` module's `Get` controller in InvoicePlane up to and including through 1.6.3. The vulnerability allows unauthenticated attackers to read arbitrary files on the server by manipulating the input filename. This leads to the disclosure of sensitive information, including configuration files with database credentials. Version 1.6.4 fixes the issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Invoiceplane< 1.6.4

Remediation

Fixed in
Invoiceplane≥ 1.6.4

References

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Frequently asked

Is CVE-2026-23491 being actively exploited?

CVE-2026-23491 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 4.31%.

How severe is CVE-2026-23491?

CVE-2026-23491 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 4.31% probability of exploitation.

Which products are affected by CVE-2026-23491?

Affected products include Invoiceplane.

How do I fix CVE-2026-23491?

Upgrade affected software to a fixed version, for example Invoiceplane 1.6.4 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-23491 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.