6.8
CVSSv3

CVE-2020-26244

Published: 02/12/2020 Updated: 08/12/2020
CVSS v2 Base Score: 4.9 | Impact Score: 4.9 | Exploitability Score: 6.8
CVSS v3 Base Score: 6.8 | Impact Score: 5.2 | Exploitability Score: 1.6
VMScore: 436
Vector: AV:N/AC:M/Au:S/C:P/I:P/A:N

Vulnerability Summary

Python oic is a Python OpenID Connect implementation. In Python oic before version 1.2.1, there are several related cryptographic issues affecting client implementations that use the library. The issues are: 1) The IdToken signature algorithm was not checked automatically, but only if the expected algorithm was passed in as a kwarg. 2) JWA `none` algorithm was allowed in all flows. 3) oic.consumer.Consumer.parse_authz returns an unverified IdToken. The verification of the token was left to the discretion of the implementator. 4) iat claim was not checked for sanity (i.e. it could be in the future). These issues are patched in version 1.2.1.

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python openid connect project python openid connect