CVE-2026-33742 (GCVE-0-2026-33742)
Vulnerability from cvelistv5 – Published: 2026-03-26 20:50 – Updated: 2026-03-27 13:55
VLAI
EPSS
VEX
Title
Invoice Ninja has Stored XSS via Markdown HTML Injection in Product Notes
Summary
Invoice Ninja is a source-available invoice, quote, project and time-tracking app built with Laravel. Product notes fields in Invoice Ninja v5.13.0 allow raw HTML via Markdown rendering, enabling stored XSS. The Markdown parser output was not sanitized with `purify::clean()` before being included in invoice templates. This is fixed in v5.13.4 by the vendor by adding `purify::clean()` to sanitize Markdown output.
Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-27 13:33 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
GitHub_M
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/invoiceninja/invoiceninja/secu… | x_refsource_CONFIRM |
| https://github.com/invoiceninja/invoiceninja/rele… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| invoiceninja | invoiceninja |
Affected:
< 5.13.4
|
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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