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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.

PUBLISHED Reserved 2026-06-30 | Published 2026-06-30 | Updated 2026-07-14 | Assigner VulnCheck




MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Problem types

URL Redirection to Untrusted Site ('Open Redirect')

Product status

Default status
unaffected

Any version
affected

Credits

George Chen finder

References

github.com/invoiceninja/invoiceninja/issues/12039 (Researcher Disclosure) technical-description exploit

www.vulncheck.com/...ent-portal-login-via-intended-parameter third-party-advisory

cve.org (CVE-2026-58450)

nvd.nist.gov (CVE-2026-58450)

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