Components
Vulnerabilities
Pricing
MCP
Docs
Sign up
Login
jsonwebtoken 4.0.1 | Vulnerabilities | Sonatype Guide
cargo
jsonwebtoken
4.0.1
jsonwebtoken 4.0.1
Published
Mar 19, 2018
•
Policy
compliance
cargo Registry
Developer Trust Score
N/A
Recommended Version:
x.y.z
Best
Latest version with 0 known vulnerabilities that meets your policy.
Compare Versions
Overview
Overview
Versions
56
Versions
56
Vulnerabilities
1
Vulnerabilities
1
Dependencies
0
Dependencies
0
Severity
Critical
(0)
High
(1)
Medium
(0)
Low
(0)
CVSS Score
0.0
10.0
EPSS Score
0.0
1.0
Malware
KEV Status
Published
Filter
Sort: Published (Newest first)
7.5
CVE-2026-25537
jsonwebtoken is a JWT lib in rust. Prior to version 10.3.0, there is a Type Confusion vulnerability in jsonwebtoken, specifically, in its claim validation logic. When a standard claim (such as nbf or exp) is provided with an incorrect JSON type (Like a String instead of a Number), the library’s internal parsing mechanism marks the claim as “FailedToParse”. Crucially, the validation logic treats this “FailedToParse” state identically to “NotPresent”. This means that if a check is enabled (like: validate_nbf = true), but the claim is not explicitly marked as required in required_spec_claims, the library will skip the validation check entirely for the malformed claim, treating it as if it were not there. This allows attackers to bypass critical time-based security restrictions (like “Not Before” checks) and commit potential authentication and authorization bypasses. This issue has been patched in version 10.3.0.
affected
Severity
High
Published
Feb 4, 2026
