High severity · published Feb 18, 2026
CVE-2026-23491
InvoicePlane has Unauthenticated Path Traversal in Guest Controller
7.5
CVSS
4.6%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.6% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IN
InvoicePlane · InvoicePlane
< 1.6.4 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23491
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-23491
Patch
https://github.com/InvoicePlane/InvoicePlane/commit/add8bb798dde621f886823065ef1841986543c69
Exploit
https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-88gq-mv54-v3fc
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