CVE-2026-87689 Metasploit Framework Web Service REST API Missing Authentication on Credential Endpoints
Attackers can read, modify, or delete stored credentials without authentication via unsecured REST API endpoints in Metasploit Framework.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-87689?
CVE-2026-87689 is a critical missing authorization vulnerability in Rapid7 Metasploit Framework, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Metasploit Framework Web Service REST API (msf-ws) exposes the credential store through Msf::WebServices::CredentialServlet. Every mutating and read route in this servlet calls warden.authenticate! before processing a request, except the update_credential (PUT) and delete_credentials (DELETE) handlers for /api/v1/credentials, which omit the authentication call entirely. Because these handlers call directly into lib/msf/core/db_manager/cred.rb, which performs no authorization check of its own, any client able to reach the web service on its default 0.0.0.0:8080 listener can read, modify, or permanently delete every stored credential record — including passwords, hashes, and private keys stored for a shared team engagement — without presenting any authentication. All published versions of Metasploit Framework through 6.5.4 are affected. The issue is fixed in 6.5.5 by adding warden.authenticate! as the first statement in both handlers, matching the pattern used by every other route in the API.
Weakness: CWE-306
Which versions are affected by CVE-2026-87689?
How do I fix CVE-2026-87689?
No fix has been published for CVE-2026-87689 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-87689 being exploited?
There is no known exploitation of CVE-2026-87689 in the wild and no public exploit code.
Sources
Also known as GHSA-4r4h-q2gr-cvcv.