CVE-2026-19363
Severity CVSS v4.0:
MEDIUM
Type:
CWE-200
Information Leak / Disclosure
Publication date:
09/08/2026
Last modified:
12/08/2026
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.
Impact
Base Score 4.0
5.50
Severity 4.0
MEDIUM
Base Score 3.x
5.30
Severity 3.x
MEDIUM
Base Score 2.0
5.00
Severity 2.0
MEDIUM