Open Redirect Vulnerability in Invoice Ninja Affected by External URL Manipulation
CVE-2026-58450

5.3MEDIUM

Key Information:

Vendor

Invoiceninja

Status
Invoiceninja
Vendor
CVE Published:
30 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-58450?

Invoice Ninja versions up to 5.13.26 contain an open redirect vulnerability in the client portal login. This issue allows unauthenticated attackers to craft malicious login links that redirect authenticated users to attacker-controlled external URLs. By injecting a harmful value into the intended query parameter, attackers can exploit the session handling mechanism, which fails to validate the host before performing a redirect. This vulnerability exposes users to potential phishing attacks after they log in to the legitimate portal.

Affected Version(s)

invoiceninja 0 <= 5.13.26

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-58450 - Proof of Concept

References

https://github.com/invoiceninja/invoiceninja/issues/12039
technical-descriptionexploit
https://www.vulncheck.com/advisories/invoice-ninja-open-r...
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.