What is CVE-2015-10004?

CVE-2015-10004 is a high-severity security vulnerability in github.com/robbert229/jwt (go), affecting versions < 0.0.0-20170426191122-ca1404ee6e83. It is fixed in 0.0.0-20170426191122-ca1404ee6e83.

How severe is CVE-2015-10004?

CVE-2015-10004 has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Which versions of github.com/robbert229/jwt are affected by CVE-2015-10004?

github.com/robbert229/jwt (go) versions < 0.0.0-20170426191122-ca1404ee6e83 is affected.

Is there a fix for CVE-2015-10004?

Yes. CVE-2015-10004 is fixed in 0.0.0-20170426191122-ca1404ee6e83. Upgrade to this version or later.

Is CVE-2015-10004 exploitable, and should I be worried?

Whether CVE-2015-10004 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 CVE-2015-10004 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.

CVE-2015-10004 in github.com/robbert229/jwt

Q: How severe is CVE-2015-10004?

CVE-2015-10004 has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Q: Which versions of github.com/robbert229/jwt are affected by CVE-2015-10004?

github.com/robbert229/jwt (go) versions < 0.0.0-20170426191122-ca1404ee6e83 is affected.

Q: Is there a fix for CVE-2015-10004?

Yes. CVE-2015-10004 is fixed in 0.0.0-20170426191122-ca1404ee6e83. Upgrade to this version or later.

Q: Is CVE-2015-10004 exploitable, and should I be worried?

Whether CVE-2015-10004 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 CVE-2015-10004 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 CVE-2015-10004?

Upgrade github.com/robbert229/jwt to 0.0.0-20170426191122-ca1404ee6e83 or later.

Summary

robbert229/jwt's token validation methods vulnerable to a timing side-channel during HMAC comparison

Token validation methods are susceptible to a timing side-channel during HMAC comparison. With a large enough number of requests over a low latency connection, an attacker may use this to determine the expected HMAC.

Impact

CVE-2015-10004 has a CVSS score of 7.5 (High). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (0.0.0-20170426191122-ca1404ee6e83); upgrading removes the vulnerable code path.

Affected versions

github.com/robbert229/jwt (< 0.0.0-20170426191122-ca1404ee6e83)

Security releases

github.com/robbert229/jwt → 0.0.0-20170426191122-ca1404ee6e83 (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/robbert229/jwt to 0.0.0-20170426191122-ca1404ee6e83 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 CVE-2015-10004? CVE-2015-10004 is a high-severity security vulnerability in github.com/robbert229/jwt (go), affecting versions < 0.0.0-20170426191122-ca1404ee6e83. It is fixed in 0.0.0-20170426191122-ca1404ee6e83.
How severe is CVE-2015-10004? CVE-2015-10004 has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Which versions of github.com/robbert229/jwt are affected by CVE-2015-10004? github.com/robbert229/jwt (go) versions < 0.0.0-20170426191122-ca1404ee6e83 is affected.
Is there a fix for CVE-2015-10004? Yes. CVE-2015-10004 is fixed in 0.0.0-20170426191122-ca1404ee6e83. Upgrade to this version or later.
Is CVE-2015-10004 exploitable, and should I be worried? Whether CVE-2015-10004 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 CVE-2015-10004 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 CVE-2015-10004? Upgrade github.com/robbert229/jwt to 0.0.0-20170426191122-ca1404ee6e83 or later.