Description (CNA)
A flaw was found in SmallRye JWT's AwsAlbKeyResolver, which is used by applications to verify JSON Web Tokens signed by AWS Application Load Balancers. When the AWS_ALB key provider is configured, the resolver constructs the key-fetch URL by directly concatenating the attacker-controlled kid header value from an inbound JWT without sanitizing path traversal characters or query-string separators. This allows an unauthenticated remote attacker to force the application server to issue GET requests to arbitrary paths on the same origin as the configured key endpoint. As a result, non-public endpoints or internal data reachable on that origin may be read by the attacker before JWT signature verification takes place.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat build of Quarkus 3.27.5.SP2 | unaffected |
| Red Hat / Red Hat build of Quarkus 3.33.3.SP2 | unaffected |
| Red Hat / Exploit Intelligence | affected |
| Red Hat / Red Hat build of Apicurio Registry 3 | affected |
| Red Hat / Red Hat build of Apicurio Registry 3 | unknown |
| Red Hat / Red Hat build of Quarkus | affected |
| Red Hat / Red Hat JBoss Enterprise Application Platform 8 | affected |
| Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack | affected |
CWE
CWE-22
References
- https://access.redhat.com/errata/RHSA-2026:69440
- https://access.redhat.com/errata/RHSA-2026:69470
- https://access.redhat.com/security/cve/CVE-2026-81829
- https://bugzilla.redhat.com/show_bug.cgi?id=2524980
ADP enrichment
No English description supplied.
No references supplied.