VYPR
Medium severity6.8NVD Advisory· Published Dec 2, 2020· Updated Jun 17, 2026

CVE-2020-26244

CVE-2020-26244

Description

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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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
oicPyPI
< 1.2.11.2.1

Affected products

3

Patches

Vulnerability mechanics

References

8

News mentions

0

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