What is GHSA-W67G-5RQW-F597?

GHSA-W67G-5RQW-F597 is a medium-severity security vulnerability in github.com/gorilla/websocket (go), affecting versions < 1.5.3. It is fixed in 1.5.3.

Which versions of github.com/gorilla/websocket are affected by GHSA-W67G-5RQW-F597?

github.com/gorilla/websocket (go) versions < 1.5.3 is affected.

Is there a fix for GHSA-W67G-5RQW-F597?

Yes. GHSA-W67G-5RQW-F597 is fixed in 1.5.3. Upgrade to this version or later.

Is GHSA-W67G-5RQW-F597 exploitable, and should I be worried?

Whether GHSA-W67G-5RQW-F597 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether GHSA-W67G-5RQW-F597 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

GHSA-W67G-5RQW-F597 in github.com/gorilla/websocket

Q: Which versions of github.com/gorilla/websocket are affected by GHSA-W67G-5RQW-F597?

github.com/gorilla/websocket (go) versions < 1.5.3 is affected.

Q: Is there a fix for GHSA-W67G-5RQW-F597?

Yes. GHSA-W67G-5RQW-F597 is fixed in 1.5.3. Upgrade to this version or later.

Q: Is GHSA-W67G-5RQW-F597 exploitable, and should I be worried?

Whether GHSA-W67G-5RQW-F597 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether GHSA-W67G-5RQW-F597 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix GHSA-W67G-5RQW-F597?

Upgrade github.com/gorilla/websocket to 1.5.3 or later.

Summary

Gorilla WebSocket Uses Cryptographically Weak PRNG for WebSocket Mask Key

gorilla/websocket used math/rand (cryptographically weak pseudo-random number generator) to generate WebSocket frame mask keys prior to commit d67f4185. WebSocket masking keys MUST be unpredictable to prevent frame content injection attacks. math/rand produces deterministic output when seeded with a known value, enabling an attacker to predict or recover mask keys and inject content into WebSocket connections.

Type: Use of Cryptographically Weak Pseudo-Random Number Generator
Fix: Replaced math/rand with crypto/rand (commit d67f4185, released in v1.5.3)
Credit: bounty-hunter v6.0 silent-fix detection

Impact

Affected versions

github.com/gorilla/websocket (< 1.5.3)

Security releases

github.com/gorilla/websocket → 1.5.3 (go)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

Upgrade github.com/gorilla/websocket to 1.5.3 or later to resolve this vulnerability.

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

What is GHSA-W67G-5RQW-F597? GHSA-W67G-5RQW-F597 is a medium-severity security vulnerability in github.com/gorilla/websocket (go), affecting versions < 1.5.3. It is fixed in 1.5.3.
Which versions of github.com/gorilla/websocket are affected by GHSA-W67G-5RQW-F597? github.com/gorilla/websocket (go) versions < 1.5.3 is affected.
Is there a fix for GHSA-W67G-5RQW-F597? Yes. GHSA-W67G-5RQW-F597 is fixed in 1.5.3. Upgrade to this version or later.
Is GHSA-W67G-5RQW-F597 exploitable, and should I be worried? Whether GHSA-W67G-5RQW-F597 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether GHSA-W67G-5RQW-F597 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix GHSA-W67G-5RQW-F597? Upgrade github.com/gorilla/websocket to 1.5.3 or later.