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CVE-2026-49998

8.2 · HIGH

Centrifugo is an open-source scalable real-time messaging server.

Published Jul 16, 2026CWE-347EPSS 0.27%

Overview

CVE-2026-49998 is a high-severity vulnerability. It was published on July 16, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/centrifugal/centrifugo/commit/15d785015c6f318c1b68ea40b813699c9f8bd2c4GitHubgithub.com/centrifugal/centrifugo/pull/1142GitHubgithub.com/centrifugal/centrifugo/releases/tag/v6.8.1GitHubgithub.com/centrifugal/centrifugo/security/advisories/GHSA-g6vg-wj8f-48cjGitHubgithub.com/centrifugal/centrifugo/security/advisories/GHSA-g6vg-wj8f-48cj

How CyberStrike helps

Frequently asked questions

What is CVE-2026-49998?

CVE-2026-49998 is a high-severity vulnerability. It was published on July 16, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-49998?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-49998?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-49998?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-49998 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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