CVE-2026-49998: Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.1, Centrifugo dynamic JWKS endpoint verification could reuse a key for one…

PriorityP348high8.2CVSS 3.1

AVNACHPRLUINSCCHIHAN

EPSS

0.27%

18.3th percentile

Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.1, Centrifugo dynamic JWKS endpoint verification could reuse a key for one allowed issuer to verify a JWT for another allowed issuer because the JWKS cache and singleflight lookup were keyed only by JWT header kid, not by the resolved JWKS endpoint, issuer, audience, or trust-domain namespace, affecting client.token.jwks_public_endpoint, client.subscription_token.jwks_public_endpoint, internal/jwks/cache.go, and internal/jwks/manager.go. This issue is fixed in version 6.8.1.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
centrifugal	centrifugo	< 6.8.1	6.8.1
github.com	centrifugal_centrifugo	0 – 2.4.0	—
github.com	centrifugal_centrifugo_v3	0 – 3.2.3	—
github.com	centrifugal_centrifugo_v4	0 – 4.1.5	—
github.com	centrifugal_centrifugo_v5	0 – 5.4.9	—
github.com	centrifugal_centrifugo_v6	>= 0 < 6.8.1	6.8.1

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