CVE-2026-24746

MediumPublic PoC

Published: 18 February 2026

Published

18 February 2026

Modified

20 February 2026

KEV Added

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Patch

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CVSS Score v3.1 5.7 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:L

EPSS Score 0.0002 5.3th percentile

Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-24746 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Invoiceplane Invoiceplane. Its CVSS base score is 5.7 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique JavaScript (T1059.007); ranked at the 5.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2026-24746 is a Stored Cross-Site Scripting (XSS) vulnerability in InvoicePlane version 1.7.0, a self-hosted open source application for managing invoices, clients, and payments. The issue resides in the Edit Quotes function, where the application fails to validate user input in the quote_number parameter, allowing malicious scripts to be stored and executed. This CWE-79 flaw has a CVSS v3.1 base score of 5.7 (AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:L).

An attacker with administrator privileges can exploit this vulnerability by injecting malicious payloads into the quote_number field during quote editing. Exploitation requires user interaction, such as an administrator viewing or interacting with the affected quote, which triggers the stored script. Successful attacks can lead to unauthorized modification of application data, creation of persistent backdoors via stored malicious scripts, and full compromise of the application's integrity.

InvoicePlane version 1.7.1 addresses the vulnerability with a patch, as detailed in the project's GitHub commit (https://github.com/InvoicePlane/InvoicePlane/commit/93622f2df88a860d89bfee56012cabb2942061d6) and security advisory (https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-73x8-gr6v-vjvj). Security practitioners should upgrade to the patched version to mitigate the risk.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-7931

Vulnerability details

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. A Stored Cross-Site Scripting (XSS) vulnerability occurs in the Edit Quotes functions of InvoicePlane version 1.7.0. In the Editing Quotes function, the application does not validate user…

input at the quote_number parameter. Although administrator privileges are required to exploit it, this is still considered a critical vulnerability as it can cause actions such as unauthorized modification of application data, creation of persistent backdoors through stored malicious scripts, and full compromise of the application's integrity. Version 1.7.1 patches the issue.

CWE(s): CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1059.007 JavaScript Execution

Adversaries may abuse various implementations of JavaScript for execution.

attack.mitre.org →

T1185 Browser Session Hijacking Collection

Adversaries may take advantage of security vulnerabilities and inherent functionality in browser software to change content, modify user-behaviors, and intercept information as part of various browser session hijacking techniques.

attack.mitre.org →

T1565.001 Stored Data Manipulation Impact

Adversaries may insert, delete, or manipulate data at rest in order to influence external outcomes or hide activity, thus threatening the integrity of the data.

attack.mitre.org →

Why these techniques?

Stored XSS directly enables client-side JavaScript execution (T1059.007) in victim browsers; facilitates session hijacking via script injection (T1185); and supports stored data manipulation (T1565.001) given the high integrity impact and persistent script storage in quotes.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1