CVE-2025-59936: get-jwks: poisoned JWKS cache allows post-fetch issuer validation bypass

September 26, 2025 (updated September 29, 2025)

A vulnerability in get-jwks can lead to cache poisoning in the JWKS key-fetching mechanism.

References

github.com/advisories/GHSA-qc2q-qhf3-235m
github.com/nearform/get-jwks
github.com/nearform/get-jwks/commit/1706a177a80a1759fe68e3339dc5a219ce03ddb9
github.com/nearform/get-jwks/security/advisories/GHSA-qc2q-qhf3-235m
nvd.nist.gov/vuln/detail/CVE-2025-59936

Code Behaviors & Features

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