malach-it boruta up to 2.3.6 HTTP Client clients.ex request_uri/jwks_uri server-side request forgery

Summaryinfo

A vulnerability was found in malach-it boruta up to 2.3.6. It has been declared as critical. This vulnerability affects the function Boruta.Oauth.Request.Base.fetch_unsigned_request/1/Boruta.Openid.parse_registration_params/2/Boruta.Ecto.Clients.refresh_jwk_from_jwks_uri/1 of the file lib/boruta/oauth/request/base.ex/lib/boruta/openid.ex/lib/boruta/adapters/ecto/clients.ex of the component HTTP Client. Executing a manipulation of the argument request_uri/jwks_uri can lead to server-side request forgery. This vulnerability appears as CVE-2026-54885. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in malach-it boruta up to 2.3.6. It has been declared as critical. This vulnerability affects the function Boruta.Oauth.Request.Base.fetch_unsigned_request/1/Boruta.Openid.parse_registration_params/2/Boruta.Ecto.Clients.refresh_jwk_from_jwks_uri/1 of the file lib/boruta/oauth/request/base.ex/lib/boruta/openid.ex/lib/boruta/adapters/ecto/clients.ex of the component HTTP Client. The manipulation of the argument request_uri/jwks_uri with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Server-Side Request Forgery vulnerability in malach-it Boruta allows an unauthenticated remote attacker to cause the OAuth/OpenID authorization server to issue outbound HTTP requests to attacker-chosen URIs, including internal services and cloud metadata endpoints. Three code paths fetch remote URIs supplied by the requester without sufficient validation of the target. Boruta.Oauth.Request.Base.fetch_unsigned_request/1 in lib/boruta/oauth/request/base.ex dereferences the OAuth request_uri parameter from the authorization request via Finch.build(:get, request_uri) |> Finch.request(OpenIDHttpClient). Boruta.Openid.parse_registration_params/2 in lib/boruta/openid.ex dereferences the jwks_uri supplied in an OpenID Connect dynamic client registration request. Boruta.Ecto.Clients.refresh_jwk_from_jwks_uri/1 in lib/boruta/adapters/ecto/clients.ex later refreshes the stored jwks_uri for an existing client. In all three paths the only validation is that the URI parses with a scheme (and one of the two request_uri clauses does not even restrict the scheme to http or https). The implementations do not require HTTPS, do not enforce a host or IP allowlist, do not reject loopback, private, link-local, or other non-public ranges after DNS resolution, do not cap response size, and do not constrain redirects. An attacker can therefore steer the server's HTTP client at arbitrary network targets reachable from the Boruta host. This issue affects boruta: from 2.3.2 before 2.3.7.

The advisory is available at github.com. This vulnerability was named CVE-2026-54885 since 06/16/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 2.3.7 eliminates this vulnerability.

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Productinfo

Vendor

• malach-it

Name

• boruta

Version

• 2.3.0
• 2.3.1
• 2.3.2
• 2.3.3
• 2.3.4
• 2.3.5
• 2.3.6

CPE 2.3info

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CPE 2.2info

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