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CVE-2026-83744— invoiceninja Invoice Ninja invoices Endpoint Purify.php isHostSafe server-side request forgery

Quick assessment

Affected
invoiceninja Invoice Ninja
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Invoice Ninja是Invoice Ninja公司开源的一个免费发票软件。 Invoice Ninja 5.13.26及之前版本存在服务端请求伪造漏洞，该漏洞源于invoices Endpoint组件中app/Services/Pdf/Purify.php文件的Purify::isHostSafe函数对notes参数操作不当，可能导致服务端请求伪造。

CVSS 4.3 · Medium EPSS 0.35% · P29

Possible ATT&CK Techniques 1 AI

T1043

Affected Version Matrix 27

VendorProduct Version RangeStatus
invoiceninja Invoice Ninja 5.13.0 affected
5.13.1 affected
5.13.2 affected
5.13.3 affected
5.13.4 affected
5.13.5 affected
5.13.6 affected
5.13.7 affected
… +19 more rows
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I. Basic Information for CVE-2026-83744

Vulnerability Information
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Vulnerability Title
invoiceninja Invoice Ninja invoices Endpoint Purify.php isHostSafe server-side request forgery
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in invoiceninja Invoice Ninja up to 5.13.26. This vulnerability affects the function Purify::isHostSafe of the file app/Services/Pdf/Purify.php of the component invoices Endpoint. The manipulation of the argument notes leads to server-side request forgery. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Invoice Ninja 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Invoice Ninja是Invoice Ninja公司开源的一个免费发票软件。 Invoice Ninja 5.13.26及之前版本存在服务端请求伪造漏洞，该漏洞源于invoices Endpoint组件中app/Services/Pdf/Purify.php文件的Purify::isHostSafe函数对notes参数操作不当，可能导致服务端请求伪造。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
invoiceninja Invoice Ninja 5.13.0 cpe:2.3:a:invoiceninja:invoice_ninja:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-83744

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-83744

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Security Blog Posts for CVE-2026-83744 (1)

Other References for CVE-2026-83744 (3)

IV. Related Vulnerabilities

Same product: Invoice Ninja
Same vendor: invoiceninja
Same weakness: CWE-918