CVE-2018-1000531 json
inversoft prime-jwt version prior to commit abb0d479389a2509f939452a6767dc424bb5e6ba contains a CWE-20 vulnerability in JWTDecoder.decode t…
published 2018-06-26 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-1923
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 76%
- public exploits
- 0
- none known
Summary
inversoft prime-jwt version prior to commit abb0d479389a2509f939452a6767dc424bb5e6ba contains a CWE-20 vulnerability in JWTDecoder.decode that can result in an incorrect signature validation of a JWT token. This attack can be exploitable when an attacker crafts a JWT token with a valid header using 'none' as algorithm and a body to requests it be validated. This vulnerability was fixed after commit abb0d479389a2509f939452a6767dc424bb5e6ba.
Exploit prediction
1.64% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
github.com
/inversoft/prime-jwt/issues/3
third-party-advisory
Sources
- CVE List CVE-2018-1000531
- NVD CVE-2018-1000531
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