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PYSEC-2026-3756

Quick fix

PYSEC-2026-3756 — 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 vulnerability in PublicKeyBundle.from_dict() that creates key bundles from untrusted data without verifying signatures. Attackers can call from_dict() followed by to_identity() without signature verification to encrypt data using attacker-controlled public keys, leaking secrets.

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-8h88-gxp3-j7pg[ADVISORY]
https://www.vulncheck.com/advisories/openssl-encrypt-before-unverified-key-bundle-encryption[ADVISORY]