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Invoice Ninja CVE-2026-83744

| EUVDEUVD-2026-68982 LOW
Server-Side Request Forgery (SSRF) (CWE-918)
2026-09-01 VulDB GHSA-wgqw-w7f3-xcj4
2.1
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
2.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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
vuln.today AI
4.3 MEDIUM

Network-reachable SSRF requiring low-privilege authentication; scope unchanged and confidentiality impact limited to internal host probing with no integrity or availability consequence.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
Analysis Generated
Sep 01, 2026 - 05:36 vuln.today
Severity Changed
Sep 01, 2026 - 05:22 NVD
MEDIUM LOW
CVSS changed
Sep 01, 2026 - 05:22 NVD
5.3 (MEDIUM) 2.1 (LOW)
CVE Published
Sep 01, 2026 - 05:00 cve.org
LOW 2.1

DescriptionCVE.org

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.

AnalysisAI

Server-side request forgery in Invoice Ninja up to version 5.13.26 allows authenticated remote attackers to coerce the application server into issuing arbitrary outbound HTTP requests by injecting malicious URLs into invoice note fields. The flaw lies in the Purify::isHostSafe() method within app/Services/Pdf/Purify.php, which inadequately validates the notes parameter before the PDF rendering pipeline processes it. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid authenticated session with at minimum low-privilege access to the Invoice Ninja application, as confirmed by the CVSS 4.0 vector metric PR:L. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 2.1 (AV:N/AC:L/AT:N/PR:L/UI:N/VC:L) accurately reflects a constrained, authenticated SSRF with limited confidentiality impact and no integrity or availability effect. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch has been identified at time of analysis; the vendor did not respond to the researcher's disclosure. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-83744 vulnerability details – vuln.today

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