Description
A vulnerability was found in lmammino oidc-authorizer up to 0.4.0. Impacted is an unknown function of the file src/handler.rs of the component Lambda Authorizer. The manipulation results in sensitive information in log files. The attack can be executed remotely. `src/handler.rs` logs raw Authorization header values and complete bearer tokens/JWTs on authentication failure paths, potentially exposing credentials through CloudWatch Logs. `src/models.rs` serializes the complete validated JWT claims set with `serde_json::to_string(token_claims).unwrap()` and propagates it through `context["jwtClaims"]` to downstream integrations. This code performs serialization, not deserialization, and does not process attacker-controlled `jwtClaims` input. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| lmammino | oidc-authorizer | 0.1, 0.2, 0.3, 0.4.0 | — |
References
- VDB-387217 | lmammino oidc-authorizer Lambda Authorizer handler.rs log file vdb-entry
- VDB-387217 | CTI Indicators (IOB, IOC, TTP, IOA) signature permissions-required
- CVE-2026-19363 | CVE Analysis and Report third-party-advisory
- Submit #866093 | lmammino oidc-authorizer 0.4.0 Exposure of Sensitive Information Through Metadata third-party-advisory