CVE-2026-59096
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
Dapr Sentry's OIDC discovery endpoint derives the issuer and jwks_uri of the /.well-known/openid-configuration document from the request Host, honoring an attacker-controlled X-Forwarded-Host header without validation when no allowed-hosts list is configured (the default), and serves the document with a one-hour public cache lifetime. A remote unauthenticated attacker can poison the discovery document so relying parties performing dynamic (unpinned) discovery fetch the JWKS from an attacker-controlled server, causing attacker-signed JWTs to be accepted. Exploitation requires the OIDC server enabled without a configured jwt-issuer or oidc-allowed-hosts.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| dapr | dapr | 1.17.0 | affected |
| dapr | dapr | 1.18.0 | affected |
Weaknesses
- CWE-346: Origin Validation Error
References
- https://github.com/dapr/dapr/pull/10027
- https://github.com/dapr/dapr/pull/10028
- https://github.com/dapr/dapr/pull/10029
- https://www.vulncheck.com/advisories/dapr-oidc-discovery-issuer-and-jwks-uri-injection-via-unvalidated-x-forwarded-host
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