What’s Vulnerable › Vulnerabilities

CVE-2019-18848

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-11-12 · updated 2026-06-17
• Weakness: CWE-287

Description

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

Affected products

• Debian Linux: 9.0
• Json-Jwt Project Json-Jwt: before 1.11.0 — fixed in 1.11.0

How to fix

Upgrade to a fixed version: Json-Jwt Project Json-Jwt 1.11.0. Check the vendor advisory for mitigations.

References

• https://github.com/nov/json-jwt/commit/ada16e772906efdd035e3df49cb2ae372f0f948a
• https://github.com/nov/json-jwt/compare/v1.10.2...v1.11.0
• https://lists.debian.org/debian-lts-announce/2020/10/msg00001.html
• https://github.com/nov/json-jwt/commit/ada16e772906efdd035e3df49cb2ae372f0f948a
• https://github.com/nov/json-jwt/compare/v1.10.2...v1.11.0
• https://lists.debian.org/debian-lts-announce/2020/10/msg00001.html

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