CVE-2018-1000539
CVE-2018-1000539 is a medium-severity vulnerability in Json-jwt Project Json-jwt with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (51st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-347
- Affected product: Json-jwt Project Json-jwt
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2018-1000539?
- 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.
- How severe is CVE-2018-1000539?
- CVE-2018-1000539 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
- Is CVE-2018-1000539 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-1000539?
- CVE-2018-1000539 affects Json-jwt Project Json-jwt. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-1000539?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2018-1000539 published?
- CVE-2018-1000539 was published on 2018-06-26 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:json-jwt_project:json-jwt:*:*:*:*:*:*:*:*
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