What’s Vulnerable › Vulnerabilities

CVE-2015-10004: Timing side-channel in github.com/robbert229/jwt

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-12-27 · updated 2026-06-17
• Weakness: CWE-668

Description

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.

Affected products

• Json Web Token Project Json Web Token: all versions

References

• https://github.com/robbert229/jwt/commit/ca1404ee6e83fcbafb66b09ed0d543850a15b654
• https://github.com/robbert229/jwt/issues/12
• https://pkg.go.dev/vuln/GO-2020-0023
• https://github.com/robbert229/jwt/commit/ca1404ee6e83fcbafb66b09ed0d543850a15b654
• https://github.com/robbert229/jwt/issues/12
• https://pkg.go.dev/vuln/GO-2020-0023

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