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CVE-2026-32301

Centrifugal Centrifugo server-side request forgery (SSRF)

9.3 CRITICALPublic exploitEPSS 0.37%
  1. Published13 Mar 2026

Description

Centrifugo is an open-source scalable real-time messaging server. Prior to 6.7.0, Centrifugo is vulnerable to Server-Side Request Forgery (SSRF) when configured with a dynamic JWKS endpoint URL using template variables (e.g. {{tenant}}). An unauthenticated attacker can craft a JWT with a malicious iss or aud claim value that gets interpolated into the JWKS fetch URL before the token signature is verified, causing Centrifugo to make an outbound HTTP request to an attacker-controlled destination. This vulnerability is fixed in 6.7.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

Affected products

Centrifugal Centrifugo< 6.7.0

Remediation

Fixed in
Centrifugal Centrifugo≥ 6.7.0

References

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Frequently asked

Is CVE-2026-32301 being actively exploited?

CVE-2026-32301 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.37%.

How severe is CVE-2026-32301?

CVE-2026-32301 has a CVSS 3.1 base score of 9.3, rated critical. EPSS estimates a 0.37% probability of exploitation.

Which products are affected by CVE-2026-32301?

Affected products include Centrifugal Centrifugo.

How do I fix CVE-2026-32301?

Upgrade affected software to a fixed version, for example Centrifugal Centrifugo 6.7.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-32301 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.