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    4 vulnerabilities found for centrifugo by centrifugal

    CVE-2026-62963 (GCVE-0-2026-62963)

    Vulnerability from cvelistv5 – Published: 2026-07-16 19:34 – Updated: 2026-07-16 19:34
    VLAI
    Title
    Centrifugo: Decompression bomb DoS via permessage-deflate in unidirectional WebSocket transport
    Summary
    Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.4, Centrifugo unidirectional WebSocket transport with uni_websocket.compression enabled enforced uni_websocket.message_size_limit against compressed wire-frame length in internal/websocket/conn.go advanceFrame, but ReadMessage used io.ReadAll after decompression without an output cap, allowing unauthenticated requests to /connection/uni_websocket to trigger large memory and CPU consumption. This issue is fixed in version 6.8.4.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
    CWE
    • CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
    Assigner
    References
    Impacted products
    Vendor Product Version
    centrifugal centrifugo Affected: < 6.8.4
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
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      "affected": [
        {
          "product": "centrifugo",
          "vendor": "centrifugal",
          "versions": [
            {
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              "version": "\u003c 6.8.4"
            }
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      ],
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        {
          "lang": "en",
          "value": "Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.4, Centrifugo unidirectional WebSocket transport with uni_websocket.compression enabled enforced uni_websocket.message_size_limit against compressed wire-frame length in internal/websocket/conn.go advanceFrame, but ReadMessage used io.ReadAll after decompression without an output cap, allowing unauthenticated requests to /connection/uni_websocket to trigger large memory and CPU consumption. This issue is fixed in version 6.8.4."
        }
      ],
      "metrics": [
        {
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            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
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            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
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      ],
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      "providerMetadata": {
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      },
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        {
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          ],
          "url": "https://github.com/centrifugal/centrifugo/security/advisories/GHSA-q6mr-3g59-5m8x"
        },
        {
          "name": "https://github.com/centrifugal/centrifugo/pull/1162",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/centrifugal/centrifugo/pull/1162"
        },
        {
          "name": "https://github.com/centrifugal/centrifugo/commit/46d40e4ac3a5446c9745f8b219197166ae12a6e5",
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            "x_refsource_MISC"
          ],
          "url": "https://github.com/centrifugal/centrifugo/commit/46d40e4ac3a5446c9745f8b219197166ae12a6e5"
        },
        {
          "name": "https://github.com/centrifugal/centrifugo/releases/tag/v6.8.4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/centrifugal/centrifugo/releases/tag/v6.8.4"
        }
      ],
      "source": {
        "advisory": "GHSA-q6mr-3g59-5m8x",
        "discovery": "UNKNOWN"
      },
      "title": "Centrifugo: Decompression bomb DoS via permessage-deflate in unidirectional WebSocket transport"
    }
  },
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    "dateReserved": "2026-07-14T22:32:17.732Z",
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    "state": "PUBLISHED"
  },
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}

    CVE-2026-49998 (GCVE-0-2026-49998)

    Vulnerability from cvelistv5 – Published: 2026-07-16 19:33 – Updated: 2026-07-16 19:33
    VLAI
    Title
    Centrifugo: Dynamic JWKS key cache keyed only by `kid` allows cross-issuer JWT authentication bypass
    Summary
    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.
    Severity
    8.2 (High)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
    CWE
    • CWE-347 - Improper Verification of Cryptographic Signature
    Assigner
    References
    Impacted products
    Vendor Product Version
    centrifugal centrifugo Affected: < 6.8.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
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    "cna": {
      "affected": [
        {
          "product": "centrifugo",
          "vendor": "centrifugal",
          "versions": [
            {
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            }
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      ],
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        }
      ],
      "metrics": [
        {
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            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
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            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
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          ],
          "url": "https://github.com/centrifugal/centrifugo/security/advisories/GHSA-g6vg-wj8f-48cj"
        },
        {
          "name": "https://github.com/centrifugal/centrifugo/pull/1142",
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          ],
          "url": "https://github.com/centrifugal/centrifugo/pull/1142"
        },
        {
          "name": "https://github.com/centrifugal/centrifugo/commit/15d785015c6f318c1b68ea40b813699c9f8bd2c4",
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        },
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        "discovery": "UNKNOWN"
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      "title": "Centrifugo: Dynamic JWKS key cache keyed only by `kid` allows cross-issuer JWT authentication bypass"
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    CVE-2026-32301 (GCVE-0-2026-32301)

    Vulnerability from cvelistv5 – Published: 2026-03-12 21:19 – Updated: 2026-03-13 13:09
    VLAI
    Title
    Centrifugo: SSRF via unverified JWT claims interpolated into dynamic JWKS endpoint URL
    Summary
    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.
    Severity
    9.3 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
    Impacted products
    Vendor Product Version
    centrifugal centrifugo Affected: < 6.7.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
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    CVE-2026-32301 (GCVE-0-2026-32301)

    Vulnerability from nvd – Published: 2026-03-12 21:19 – Updated: 2026-03-13 13:09
    VLAI
    Title
    Centrifugo: SSRF via unverified JWT claims interpolated into dynamic JWKS endpoint URL
    Summary
    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.
    Severity
    9.3 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
    Impacted products
    Vendor Product Version
    centrifugal centrifugo Affected: < 6.7.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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