CVE-2025-45768

highCVSS 7covered by 1 sourcefirst seen 2026-08-06

CSIRTS triage

What: The library uses weak encryption when configured with short key lengths, though key length selection is delegated to the application.
Who is affected: Applications using PyJWT 2.10.1 with insufficient key lengths are affected.
Urgency: Moderate; not exploited and disputed by supplier as application-level configuration issue, but users may benefit from stronger defaults.
Action: Review key length configuration in applications using PyJWT and consider upgrading to a version with enforced minimum key length or explicit warnings.

AI-assisted analysis generated from the source advisory — verify against the original.

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Low exploitation risk0.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.

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