JSON-jwt Gem lacked element count during splitting of JWE string

HIGH 7.5CVE-2019-18848 · GHSA-cff7-6h4q-q5pj · Published 12/11/2019 · updated 17/06/2026

In short

CVE-2019-18848 is a HIGH (CVSS 7.5) vulnerability affecting json-jwt, json-jwt (json-jwt project).
Chance of exploitation in the next 30 days (EPSS): 1.3%, higher than 69.7% of all vulnerabilities.
Fix: update to 1.11.0 or later.

Package	Affected versions	Patched versions
json-jwt RubyGems	`< 1.11.0`	`1.11.0`
json-jwt json-jwt_project	`< 1.11.0`	`1.11.0`

The json-jwt gem before 1.11.0 for Ruby lacks an element count during the splitting of a JWE string.

NVD description

The json-jwt gem before 1.11.0 for Ruby lacks an element count during the splitting of a JWE string.

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