CVE-2026-23491

HIGH

InvoicePlane <=1.6.3 - Path Traversal

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-23491. PoCs published by lukasz-rybak.

AI-analyzed exploit summary This repository provides a detailed technical analysis of CVE-2026-23491, an unauthenticated path traversal vulnerability in InvoicePlane's Guest Controller. It includes a vulnerable code snippet, a proof-of-concept cURL command, and an explanation of the impact.

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.

Exploits (1)

nomisec WRITEUP
by lukasz-rybak · poc
https://github.com/lukasz-rybak/CVE-2026-23491

This repository provides a detailed technical analysis of CVE-2026-23491, an unauthenticated path traversal vulnerability in InvoicePlane's Guest Controller. It includes a vulnerable code snippet, a proof-of-concept cURL command, and an explanation of the impact.

Classification
Writeup 100%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: InvoicePlane v1.6.3
No auth needed
Prerequisites: Access to the target server's web interface
devstral-2 · analyzed Apr 12, 2026 Full analysis →

Scores

CVSS v3 7.5
EPSS 0.0105
EPSS Percentile 59.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-22
Status published
Products (1)
invoiceplane/invoiceplane < 1.6.4
Published Feb 18, 2026
Tracked Since Feb 18, 2026