Improper Authentication Affecting commercial-gitlab-rails-ee-19.3 package, versions <19.3.3-r4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published11 Oct 2026
- disclosed25 Aug 2026
Introduced: 25 Aug 2026
CVE-2026-44476 (opens in a new tab)How to fix?
Upgrade Chainguard commercial-gitlab-rails-ee-19.3 to version 19.3.3-r4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream commercial-gitlab-rails-ee-19.3 package and not the commercial-gitlab-rails-ee-19.3 package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
Doorkeeper is an OAuth 2 provider for Ruby on Rails. In version 1.9.0, an attacker who knows only a dynamically registered client's client_id, which is public information, can authenticate as that client at the token endpoint and obtain an access token without providing its client_secret. This occurs because the Dynamic Client Registration feature creates applications with confidential: false hard-coded, even though the registration response returns a client_secret and advertises support for the client_secret_basic and client_secret_post authentication methods; since Doorkeeper treats a blank or missing secret as valid for non-confidential (public) clients, the secret is never verified. Only projects that have explicitly enabled Dynamic Client Registration, which is disabled by default, are affected. This issue is fixed in version 1.10.0.