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PYSEC-2026-3743

Quick fix

PYSEC-2026-3743 — openssl-encrypt: upgrade to the fixed version with the command below.

pip install --upgrade 'openssl-encrypt>=1.4.0'

Details

openssl_encrypt versions before 1.4.0 contain a missing ownership verification vulnerability in the revoke_key method that allows authenticated clients to revoke any other client's key. Attackers can revoke arbitrary keys by providing a valid ML-DSA signature, bypassing the intended ownership restriction.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/openssl-encrypt

Introduced in: 0Fixed in: 1.4.0

Fixpip install --upgrade 'openssl-encrypt>=1.4.0'

References

https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-hvc7-763r-4f3h[ADVISORY]
https://www.vulncheck.com/advisories/openssl-encrypt-before-missing-ownership-verification-via-revoke-key[ADVISORY]