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CVSS Score
-| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| pyjwt | pip | < 1.5.1 | 1.5.1 |
The vulnerability description explicitly references the HMACAlgorithm.prepare_key function's invalid_strings check as the flawed component. The GitHub fix (PR #277) shows modifications to this function to add PKCS1 header checks. The CVE/GHSA both describe the attack vector as stemming from this missing validation in the HMAC key preparation logic.
A Semantic Attack on Google Gemini - Read the Latest Research