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CVE-2026-49998

HIGH Exploitation: PoC
8.2
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-49998
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-02 18:30 UTC
Published
2026-07-16 19:33 UTC
Last updated
2026-07-17 11:13 UTC
Primary CWE
CWE-347
CWE-347: Improper Verification of Cryptographic Signature
Vendor / Product
centrifugal / centrifugo
Sources
cve.org  ·  NVD

Severity & Metrics

8.2 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
no
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
centrifugal centrifugo — < 6.8.1
Weakness (CWE)
CWESourceDescription
CWE-347 cna CWE-347: Improper Verification of Cryptographic Signature
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.2 HIGH 3.1 cna CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
References (4)
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