Vulnerability CVE-2019-19324
Published: 2020-03-20

Description:
Xmidt cjwt through 1.0.1 before 2019-11-25 maps unsupported algorithms to alg=none, which sometimes leads to untrusted accidental JWT acceptance.

Type:

CWE-670

 (Always-Incorrect Control Flow Implementation)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Xmidt -> CJWT 

 References:
https://github.com/xmidt-org/cjwt/commit/9304d3e94242c1a6df77b21bde0e949392e1040a
https://github.com/xmidt-org/cjwt/pull/29#issuecomment-558356866
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