CVE-2026-59724

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Source

https://cve.org/CVERecord?id=CVE-2026-59724

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59724.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-59724

Aliases

GHSA-gr94-w7qr-f4j3

Downstream

RHSA-2026:26994

Published

2026-07-08T15:35:39.813Z

Modified

2026-08-12T03:51:13.149226352Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

Socket.IO: Engine.IO WebTransport SID DoS

Details

Socket.IO enables bidirectional and low-latency communication for every platform. From 6.5.0 before 6.6.7, Engine.IO servers with WebTransport enabled can resolve a crafted session ID such as proto through an inherited property of the clients object during WebTransport upgrade handling, causing a TypeError and denial of service. This issue is fixed in version 6.6.7.

Database specific

{
    "cwe_ids": [
        "CWE-20"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59724.json",
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/socketio/socket.io

Affected ranges

Type

GIT

Repo

https://github.com/socketio/socket.io

Events

Introduced

Fixed

439a8f669c6788b512dd76011c4476830d67515b

Fixed

1fa1f46cd420ac5b57bb4c04c959b58f3c79158c

Database specific

Show details

{
    "cpe": "cpe:2.3:a:socket:engine.io:*:*:*:*:*:node.js:*:*",
    "extracted_events": [
        {
            "introduced": "6.5.0"
        },
        {
            "fixed": "6.6.7"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

0.*

0.7.0

0.7.1

0.7.2

0.7.3

0.7.4

0.7.5

0.7.6

0.7.7

0.7.8

0.7.9

0.8.0

0.8.1

0.8.2

0.8.3

0.8.4

0.8.5

0.8.6

0.8.7

0.9.0

0.9.1

0.9.1-1

0.9.10

0.9.2

0.9.3

0.9.4

0.9.5

0.9.7

0.9.8

0.9.9

1.*

1.0.0

1.0.0-pre

1.0.0-pre2

1.0.0-pre3

1.0.0-pre4

1.0.0-pre5

1.0.1

1.0.2

1.0.3

1.0.4

1.0.5

1.0.6

1.1.0

1.2.0

1.2.1

1.3.0

1.3.1

1.3.2

1.4.0

1.4.1

1.4.2

1.4.3

1.4.4

1.4.5

1.5.0

1.5.1

1.6.0

1.7.0

1.7.1

1.7.2

2.*

2.0.0

2.0.1

2.0.2

2.0.3

2.0.4

2.1.0

2.1.1

2.2.0

2.3.0

3.*

3.0.0

3.0.0-rc1

3.0.0-rc2

3.0.0-rc3

3.0.0-rc4

3.0.1

3.0.2

3.0.3

3.0.4

3.0.5

3.1.0

3.1.1

3.1.2

4.*

4.0.0

4.0.1

4.0.2

4.1.0

4.1.1

4.1.2

4.1.3

4.2.0

4.3.0

4.3.1

4.3.2

4.4.0

4.4.1

4.5.0

4.5.1

4.5.2

4.5.3

4.5.4

4.6.0

4.6.0-alpha1

4.6.1

4.6.2

4.7.0

4.7.1

4.7.2

4.7.3

4.7.4

4.7.5

@socket.*

@socket.io/cluster-adapter@0.3.0

@socket.io/cluster-engine@0.1.0

@socket.io/postgres-emitter@0.1.1

@socket.io/redis-streams-emitter@0.1.0

@socket.io/redis-streams-emitter@0.1.1

engine.*

engine.io-client@6.6.1

engine.io-client@6.6.2

engine.io-client@6.6.3

engine.io-client@6.6.4

engine.io-parser@5.2.3

engine.io@6.6.1

engine.io@6.6.2

engine.io@6.6.3

engine.io@6.6.4

engine.io@6.6.5

engine.io@6.6.6

socket.*

socket.io-adapter@2.5.6

socket.io-client@4.8.0

socket.io-client@4.8.1

socket.io-client@4.8.2

socket.io-client@4.8.3

socket.io-parser@4.2.5

socket.io@4.7.5

socket.io@4.8.0

socket.io@4.8.1

socket.io@4.8.2

socket.io@4.8.3

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59724.json"