CVE-2026-65635

Description

Improper Isolation or Compartmentalization vulnerability in malach-it boruta (Elixir.Boruta.Openid module) allows attackers to register OpenID Connect clients with administrative privileges through the dynamic client registration entry point. Boruta.Openid.register_client/3 forwards caller-supplied registration parameters to the administrative client creation path without a public/admin field-level allowlist, so an unauthenticated registrant can set security-sensitive attributes including supported grant types, authorized scopes, PKCE enforcement, public refresh and revocation behavior, token lifetimes, and signing settings. The library does not distinguish between metadata a public registrant is allowed to set and administrative controls that should require operator approval. This vulnerability is associated with program files lib/boruta/openid.ex and program routines 'Elixir.Boruta.Openid':register_client/3, 'Elixir.Boruta.Openid':parse_registration_params/2. This issue affects boruta from 2.3.0 before 2.3.7.

Is your site exposed to CVE-2026-65635?

Run a free security scan — no signup, results in seconds.

Weakness Type (CWE)

CWE-653 CWE-653

References

Other References

https://cna.erlef.org/cves/CVE-2026-65635.html https://github.com/malach-it/boruta_auth/commit/82584c854a332482232fd25301ab12a835f9f643 https://github.com/malach-it/boruta_auth/commit/95619a1beaff68fa766cca9b388e7c780d182525 https://github.com/malach-it/boruta_auth/security/advisories/GHSA-w869-fcf2-68vp https://osv.dev/vulnerability/EEF-CVE-2026-65635 https://github.com/malach-it/boruta_auth/security/advisories/GHSA-w869-fcf2-68vp

Frequently Asked Questions

What is CVE-2026-65635? +

Improper Isolation or Compartmentalization vulnerability in malach-it boruta (Elixir.Boruta.Openid module) allows attackers to register OpenID Connect clients with administrative privileges through the dynamic client registration entry point. Boruta.Openid.register_client/3 forwards caller-supplied registration parameters to the administrative client creation path without a public/admin field-level allowlist, so an unauthenticated registrant can set security-sensitive attributes including supported grant types, authorized scopes, PKCE enforcement, public refresh and revocation behavior, token lifetimes, and signing settings. The library does not distinguish between metadata a public registrant is allowed to set and administrative controls that should require operator approval. This vulnerability is associated with program files lib/boruta/openid.ex and program routines 'Elixir.Boruta.Openid':register_client/3, 'Elixir.Boruta.Openid':parse_registration_params/2. This issue affects boruta from 2.3.0 before 2.3.7.

How do I check if I'm vulnerable to CVE-2026-65635? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2024-5801

Enabled IP Forwarding feature in B&R Automation Runtime versions before 6.0.2 may allow remote attack-ers to compromise network security by …

CVE-2024-8118

In Grafana, the wrong permission is applied to the alert rule write API endpoint, allowing users with permission to write …

CVE-2025-3717

When using the Grafana Snowflake Datasource Plugin, if Oauth passthrough is enabled on the datasource, and multiple users are using …

CVE-2025-41116

When using the Grafana Databricks Datasource Plugin, if Oauth passthrough is enabled on the datasource, and multiple users are using …

CVE-2025-1974 9.8

A security issue was discovered in Kubernetes where under certain conditions, an unauthenticated attacker with access to the pod network …

CVE-2024-33768 9.8

lunasvg v2.3.9 was discovered to contain a segmentation violation via the component composition_solid_source_over.