The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learningUpgrade pyjwt
to version 1.5.1 or higher.
pyjwt
is a JSON Web Token implementation in Python.
Affected versions of the package are vulnerable to Authentication Bypass.
In PyJWT 1.5.0 and below the invalid_strings
check in HMACAlgorithm.prepare_key
does not account for all PEM encoded public keys. Specifically, the PKCS1 PEM encoded format would be allowed because it is prefaced with the string -----BEGIN RSA PUBLIC KEY-----
which is not accounted for. This enables symmetric/asymmetric key confusion attacks against users using the PKCS1 PEM encoded public keys, which would allow an attacker to craft JWTs from scratch.