Answer in brief
CVE-2026-82758 records a Medium severity (CVSS 6.3) vulnerability in ash_authentication_oauth2_server treats an empty resolved secret as valid, opening the gated Dynamic Client Registration endpoint. The current sources do not mark it as known exploited. The current feed maps ash-project/ash_authentication_oauth2_server (generic), ash-project/ash_authentication_oauth2_server (generic), ash-project/ash-project/ash_authentication_oauth2_server (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps ash-project/ash_authentication_oauth2_server (generic), ash-project/ash_authentication_oauth2_server (generic), ash-project/ash-project/ash_authentication_oauth2_server (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| ash-project/ash_authentication_oauth2_servergeneric | >=855b578037c5ded18e8a6e60f42e56bde4905fae <30a87101871775d27d79f9ad6f29eafa4779e118 | 30a87101871775d27d79f9ad6f29eafa4779e118 |
| ash-project/ash_authentication_oauth2_servergeneric | >=0.1.0 <0.3.1 | 0.3.1 |
| ash-project/ash-project/ash_authentication_oauth2_servergeneric | >=855b578037c5ded18e8a6e60f42e56bde4905fae <30a87101871775d27d79f9ad6f29eafa4779e118 | 30a87101871775d27d79f9ad6f29eafa4779e118 |
Published upstream
Sep 7, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 7, 2026
Improper Authentication vulnerability in ash-project ash_authentication_oauth2_server allows an unauthenticated attacker to register OAuth clients even when Dynamic Client Registration is gated by an initial access token. resolve_secret/3 in AshAuthentication.Oauth2Server (reached through __resolve_secret__!) treated any return other than {:ok, _} or :error from a configured {module, function, args} or 2-arity-function secret provider as a valid secret, wrapping nil, false, or "" as {:ok, value}. When the initial_access_token resolves to such an empty value, POST /oauth/register compares the presented bearer token against it and the comparison passes with no token supplied, so registration is open although it was configured closed. The same fail-open affected other resolved secrets such as signing_secret. This issue affects ash_authentication_oauth2_server: from 0.1.0 before 0.3.1.
Quoted source text, attributed separately from HOL analysis.