CVE-2025-45765

9.1 criticalEPSS 0.2%

Critical (9.1). EPSS 0.2% chance of exploitation in the next 30 days.

ruby-jwt v3.0.0.beta1 was discovered to contain weak encryption. NOTE: the Supplier's perspective is "keysize is not something that is enforced by this library. Currently more recent versions of OpenSSL are enforcing some key sizes and those restrictions apply to the users of this gem also."

Severity

CVSS 3.1

9.1 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-31)
CWE: CWE-326
Published: 2025-08-07
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://gist.github.com/ZupeiNie/c621253068ce5b64911629534879e8f9
https://github.com/jwt/ruby-jwt/issues/668

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