OESA-2026-3218

See a problem?
Please try reporting it to the source first.
Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3218
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-3218.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-3218
Upstream
Published
2026-08-01T11:12:05Z
Modified
2026-08-18T01:21:26Z
Severity
  • 8.9 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H CVSS Calculator
Summary
rubygem-websocket-driver security update
Details

This module provides a complete implementation of the WebSocket protocols that can be hooked up to any TCP library. It aims to simplify things by decoupling the protocol details from the I/O layer, such that users only need to implement code to stream data in and out of it without needing to know anything about how the protocol actually works. Think of it as a complete WebSocket system with pluggable I/O.

Security Fix(es):

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an indefinite sequence of 0x80 or higher bytes that the peer parses into an ever-growing Ruby integer. This can make a WebSocket connection consume an unbounded amount of memory and lead to the host process running out of memory. This issue is fixed in version 0.8.1.(CVE-2026-54463)

Impact

If this library is used in tandem with the permessage-deflate extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size. This is because this limit is checked against the message frames' length headers, which give the size of the compressed data, not the size after decompression. This can lead to applications accepting larger messages than expected and exceeding their intended resource usage.

Patches

The issue has been patched in version 0.8.1, by checking the length of messages after they are processed by incoming extensions. All users should upgrade to this version.

Workarounds

No known workarounds exist.

Acknowledgements

This issue was discovered and reported by Pranjali Thakur, DepthFirst Security Research Team.(CVE-2026-54464)

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, when websocket-driver is used to implement a WebSocket server on top of a TCP server using WebSocket::Driver.server() or to complement a WebSocket client, a peer can make a single connection consume an unbounded amount of memory by sending an HTTP request or response with a never-ending list of headers. This can lead to the receiving process running out of memory. This issue is fixed in version 0.8.1.(CVE-2026-54465)

There is insufficient input validation when websocket-driver-ruby handles WebSocket frames. An attacker may cause a denial of service (DoS) or unexpected behavior by constructing malicious packets. Please refer to the official security advisory for specific impacts.(CVE-2026-61666)

Database specific 
{
    "severity": "High"
}
References

Affected packages

openEuler:20.03-LTS-SP4
rubygem-websocket-driver

Package

Name
rubygem-websocket-driver
Purl
pkg:rpm/openEuler/rubygem-websocket-driver&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.6.5-2.oe2003sp4

Ecosystem specific 

{
    "aarch64": [
        "rubygem-websocket-driver-0.6.5-2.oe2003sp4.aarch64.rpm",
        "rubygem-websocket-driver-debuginfo-0.6.5-2.oe2003sp4.aarch64.rpm",
        "rubygem-websocket-driver-debugsource-0.6.5-2.oe2003sp4.aarch64.rpm"
    ],
    "noarch": [
        "rubygem-websocket-driver-doc-0.6.5-2.oe2003sp4.noarch.rpm"
    ],
    "src": [
        "rubygem-websocket-driver-0.6.5-2.oe2003sp4.src.rpm"
    ],
    "x86_64": [
        "rubygem-websocket-driver-0.6.5-2.oe2003sp4.x86_64.rpm",
        "rubygem-websocket-driver-debuginfo-0.6.5-2.oe2003sp4.x86_64.rpm",
        "rubygem-websocket-driver-debugsource-0.6.5-2.oe2003sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3218.json"
openEuler:22.03-LTS-SP4
rubygem-websocket-driver

Package

Name
rubygem-websocket-driver
Purl
pkg:rpm/openEuler/rubygem-websocket-driver&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.6.5-2.oe2203sp4

Ecosystem specific 

{
    "aarch64": [
        "rubygem-websocket-driver-0.6.5-2.oe2203sp4.aarch64.rpm",
        "rubygem-websocket-driver-debuginfo-0.6.5-2.oe2203sp4.aarch64.rpm",
        "rubygem-websocket-driver-debugsource-0.6.5-2.oe2203sp4.aarch64.rpm"
    ],
    "noarch": [
        "rubygem-websocket-driver-doc-0.6.5-2.oe2203sp4.noarch.rpm"
    ],
    "src": [
        "rubygem-websocket-driver-0.6.5-2.oe2203sp4.src.rpm"
    ],
    "x86_64": [
        "rubygem-websocket-driver-0.6.5-2.oe2203sp4.x86_64.rpm",
        "rubygem-websocket-driver-debuginfo-0.6.5-2.oe2203sp4.x86_64.rpm",
        "rubygem-websocket-driver-debugsource-0.6.5-2.oe2203sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3218.json"
openEuler:24.03-LTS-SP1
rubygem-websocket-driver

Package

Name
rubygem-websocket-driver
Purl
pkg:rpm/openEuler/rubygem-websocket-driver&distro=openEuler-24.03-LTS-SP1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.7.6-2.oe2403sp1

Ecosystem specific 

{
    "aarch64": [
        "rubygem-websocket-driver-0.7.6-2.oe2403sp1.aarch64.rpm",
        "rubygem-websocket-driver-debuginfo-0.7.6-2.oe2403sp1.aarch64.rpm",
        "rubygem-websocket-driver-debugsource-0.7.6-2.oe2403sp1.aarch64.rpm"
    ],
    "noarch": [
        "rubygem-websocket-driver-doc-0.7.6-2.oe2403sp1.noarch.rpm"
    ],
    "src": [
        "rubygem-websocket-driver-0.7.6-2.oe2403sp1.src.rpm"
    ],
    "x86_64": [
        "rubygem-websocket-driver-0.7.6-2.oe2403sp1.x86_64.rpm",
        "rubygem-websocket-driver-debuginfo-0.7.6-2.oe2403sp1.x86_64.rpm",
        "rubygem-websocket-driver-debugsource-0.7.6-2.oe2403sp1.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3218.json"
openEuler:24.03-LTS-SP3
rubygem-websocket-driver

Package

Name
rubygem-websocket-driver
Purl
pkg:rpm/openEuler/rubygem-websocket-driver&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.7.6-2.oe2403sp3

Ecosystem specific 

{
    "aarch64": [
        "rubygem-websocket-driver-0.7.6-2.oe2403sp3.aarch64.rpm",
        "rubygem-websocket-driver-debuginfo-0.7.6-2.oe2403sp3.aarch64.rpm",
        "rubygem-websocket-driver-debugsource-0.7.6-2.oe2403sp3.aarch64.rpm"
    ],
    "noarch": [
        "rubygem-websocket-driver-doc-0.7.6-2.oe2403sp3.noarch.rpm"
    ],
    "src": [
        "rubygem-websocket-driver-0.7.6-2.oe2403sp3.src.rpm"
    ],
    "x86_64": [
        "rubygem-websocket-driver-0.7.6-2.oe2403sp3.x86_64.rpm",
        "rubygem-websocket-driver-debuginfo-0.7.6-2.oe2403sp3.x86_64.rpm",
        "rubygem-websocket-driver-debugsource-0.7.6-2.oe2403sp3.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3218.json"
openEuler:24.03-LTS-SP4
rubygem-websocket-driver

Package

Name
rubygem-websocket-driver
Purl
pkg:rpm/openEuler/rubygem-websocket-driver&distro=openEuler-24.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.7.6-2.oe2403sp4

Ecosystem specific 

{
    "aarch64": [
        "rubygem-websocket-driver-0.7.6-2.oe2403sp4.aarch64.rpm",
        "rubygem-websocket-driver-debuginfo-0.7.6-2.oe2403sp4.aarch64.rpm",
        "rubygem-websocket-driver-debugsource-0.7.6-2.oe2403sp4.aarch64.rpm"
    ],
    "noarch": [
        "rubygem-websocket-driver-doc-0.7.6-2.oe2403sp4.noarch.rpm"
    ],
    "src": [
        "rubygem-websocket-driver-0.7.6-2.oe2403sp4.src.rpm"
    ],
    "x86_64": [
        "rubygem-websocket-driver-0.7.6-2.oe2403sp4.x86_64.rpm",
        "rubygem-websocket-driver-debuginfo-0.7.6-2.oe2403sp4.x86_64.rpm",
        "rubygem-websocket-driver-debugsource-0.7.6-2.oe2403sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3218.json"