NVD / CVE Program· CNA GitHub_M

CVE-2026-23491: InvoicePlane has Unauthenticated Path Traversal in Guest Controller

Noroxi assessment

Priority: Monitor (action score 38/100)

A ready-made attack module is public (Nuclei); exploiting it takes no special expertise.
Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
Probability of exploitation in the next 30 days: 4.6% (FIRST EPSS); higher than 91.7% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
No fixed version is recorded, but the references include a patch (commit or PR) link.

Low priority for now. See the fix and affected versions sections below.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

CriticalCVSS 9.3 · v4.0—Proof of concept No fix recorded

Published: Feb 18, 2026
Updated: Jun 17, 2026
EPSS: 4.6% · 91th percentile
CWE: CWE-22

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 37 / 40 · 9.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 4.6%

CISA SSVC decision

Exploitation: proof of concept
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · GitHub_M: 9.3; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
Proof of concept exists, no weaponized module
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
invoiceplane	invoiceplane	cpe:2.3:a:invoiceplane:invoiceplane

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

invoiceplane invoiceplanebefore 1.6.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

InvoicePlane InvoicePlane
- < 1.6.4affected

Same product

invoiceplane: all records

Other highest-scoring records for the same primary product.

CVE-2025-67084File upload vulnerability in InvoicePlane through 1.6.3 allows authenticated attackers to upload arbitrary PHP files into attachments, which
39Monitor
CVE-2024-56975InvoicePlane (all versions tested as of December 2024) v.1.6.11 and before contains a remote code execution vulnerability in the upload_file
39Monitor
CVE-2026-39353InvoicePlane: Remote Code Execution via Writable Templates Directory
36Monitor

Published before and after this one in the same product

← EarlierCVE-2025-67082Jan 15, 2026 · An SQL injection vulnerability in InvoicePlane through 1.6.3 has been identified in "maxQuantity" and "minQuantity" parameters when generati
26Monitor
← EarlierCVE-2025-67083Jan 15, 2026 · Directory traversal vulnerability in InvoicePlane through 1.6.3 allows unauthenticated attackers to read files from the server.
21Monitor
Later →CVE-2026-24746Feb 18, 2026 · InvoicePlane has a Stored Cross-Site Scripting (XSS) issue
30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

Nuclei detection template ×1
Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Nuclei detection template	Nuclei template CVE-2026-23491	—
Proof-of-concept repository on GitHub	stars:0	2026-04-11

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

PublishedFeb 18, 2026
First PoCApr 11, 2026+51 d
TodayNov 7, 2026+262 d

EPSS, last 120 days+1% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

InvoicePlane/InvoicePlanecommit add8bb7

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-49850219 days apartInvoicePlane: Missing CSRF Protection on State-Changing delete Actions
30Monitor
CVE-2026-50547219 days apartInvoicePlane permits local file inclusion through the e-invoice XML configuration identifier
30Monitor
CVE-2025-6708334 days apartDirectory traversal vulnerability in InvoicePlane through 1.6.3 allows unauthenticated attackers to read files from the server.
21Monitor
CVE-2024-12362429 days apartInvoicePlane invoices.php download path traversal
21Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: X

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

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Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

github.com/InvoicePlane/InvoicePlane/commit/add8bb798dde621f886823065ef1841986543c69

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records