PT-2026-55297 · Dapr · Dapr

George Chen · Published 2026-07-02 · Updated 2026-07-02 · CVE-2026-59096

NVD

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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.

Fix

Origin Validation Error

Weakness Enumeration

CWE-346

Related Identifiers

CVE-2026-59096

Affected Products

Dapr

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-59096 · Security Note
• https://github.com/dapr/dapr/pull/10027 · Note
• https://github.com/dapr/dapr/pull/10028 · Note
• https://github.com/dapr/dapr/pull/10029 · Note
• https://vulncheck.com/advisories/dapr-oidc-discovery-issuer-and-jwks-uri-injection-via-unvalidated-x-forwarded-host · Note