CVE-2019-19324 json
Xmidt cjwt through 1.0.1 before 2019-11-25 maps unsupported algorithms to alg=none, which sometimes leads to untrusted accidental JWT accep…
published 2020-03-20 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-8947
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 63%
- public exploits
- 0
- none known
Summary
Xmidt cjwt through 1.0.1 before 2019-11-25 maps unsupported algorithms to alg=none, which sometimes leads to untrusted accidental JWT acceptance.
Patch / fix
- xmidt cjwt 2019-11-25
- github.com/xmidt-org/cjwt@9304d3e commit
- github.com/xmidt-org/cjwt#29 pull request
Exploit prediction
1.01% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/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-670 Always-Incorrect Control Flow Implementation
References
-
github.com
/xmidt-org/cjwt/commit/9304d3e94242c1a6df77b21bde0e949392e1040a
patch, third-party-advisory
-
github.com
/xmidt-org/cjwt/pull/29#issuecomment-558356866
patch, third-party-advisory
Sources
- CVE List CVE-2019-19324
- NVD CVE-2019-19324
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.