Vulnerabilities in pkg:gem/websocket-driver
PACKAGECVE-2026-54465 is a MODERATE memory exhaustion vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting websocket-driver libraries in the RubyGems ecosystem. The issue involves memory exhaustion in http header parser. Remediation is available by upgrading affected packages to version 0.8.1.
pkg:gem/websocket-driver
Vulnerability advisories affecting package pkg:gem/websocket-driver. Select an advisory below to view technical details or fixes.
| Advisory ID | CVE / NVD | Severity | Summary |
|---|---|---|---|
| GHSA-8j3g-f24p-4mpw | CVE-2026-54465 | MODERATE | websocket-driver: Memory exhaustion in HTTP header parser |
| GHSA-33ph-fccm-39pj | CVE-2026-54464 | MODERATE | websocket-driver: Resource limit bypass via message compression |
| GHSA-ghhp-3qvg-889p | CVE-2026-54463 | MODERATE | websocket-driver: Memory exhaustion via abuse of protocol length headers |
| GHSA-2x63-gw47-w4mm | CVE-2026-61666 | HIGH | websocket-driver-ruby: Denial of service via malformed Host header |
CVE-2026-54465 at a Glance
How to Fix CVE-2026-54465
To remediate this vulnerability, upgrade all affected websocket-driver dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade websocket-driver to 0.8.1Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for websocket-driverHow to Check if You Are Affected
To determine whether your application is affected by CVE-2026-54465, inspect your project dependencies for websocket-driver:
inspect dependencies for websocket-driverAnalyze the terminal output to locate any version of websocket-driver in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.8.1), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In websocket-driver, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-54465 Affected websocket-driver Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
websocket-driver
|
RubyGems |
< 0.8.1
|
0.8.1
|
References
Frequently Asked Questions
What is CVE-2026-54465?
Which websocket-driver versions are affected?
What version fixes CVE-2026-54465?
Is websocket-driver affected?
What CWE is associated with CVE-2026-54465?
How can I check RubyGems dependencies for CVE-2026-54465?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-8j3g-f24p-4mpw",
"modified" : "2026-08-17T16:15:30Z",
"published" : "2026-07-15T22:05:39Z",
"aliases" : [ "CVE-2026-54465" ],
"summary" : "websocket-driver: Memory exhaustion in HTTP header parser",
"details" : "### Impact\n\nIf this library is used to implement a WebSocket server on top of a TCP server (rather than an HTTP server or framework) using the `WebSocket::Driver.server()` method, or, if it is used to complement a WebSocket client, then 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.\n\n### Patches\n\nThe issue has been patched in version 0.8.1, by limiting the total size of HTTP request/response lines and headers accepted by the parser to 32 kB. All users should upgrade to this version.\n\n### Workarounds\n\nNo known workarounds exist.\n\n### Acknowledgements\n\nThis issue was discovered and reported by Pranjali Thakur, DepthFirst Security Research Team.",
"severity" : [ {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "RubyGems",
"name" : "websocket-driver"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "0.8.1"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/faye/websocket-driver-ruby/security/advisories/GHSA-8j3g-f24p-4mpw"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-54465"
}, {
"type" : "WEB",
"url" : "https://github.com/faye/websocket-driver-ruby/commit/17b569f232896e71d458404ccf4854f80e987710"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/faye/websocket-driver-ruby"
}, {
"type" : "WEB",
"url" : "https://github.com/faye/websocket-driver-ruby/releases/tag/0.8.1"
}, {
"type" : "WEB",
"url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/websocket-driver/CVE-2026-54465.yml"
}, {
"type" : "WEB",
"url" : "https://www.cve.org/CVERecord/SearchResults?query=CVE-2026-54465"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-400", "CWE-770" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-07-15T22:05:39Z",
"nvd_published_at" : "2026-07-17T20:17:26Z"
}
}