Medium severity5.3NVD Advisory· Published Jun 26, 2018· Updated Jun 17, 2026
CVE-2018-1000539
CVE-2018-1000539
Description
Nov json-jwt version >= 0.5.0 && < 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 1.9.4 and later.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
json-jwtRubyGems | >= 0.5.1, < 1.9.4 | 1.9.4 |
Affected products
1Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-mj4x-wcxf-hm8xghsaADVISORY
- github.com/nov/json-jwt/pull/62nvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2018-1000539ghsaADVISORY
- github.com/nov/json-jwt/commit/a3b2147f0f6d9aca653e7a30e453d3a92b33413fghsaWEB
- github.com/rubysec/ruby-advisory-db/blob/master/gems/json-jwt/CVE-2018-1000539.ymlghsaWEB
- www.debian.org/security/2018/dsa-4283nvdWEB
News mentions
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