Is CVE-2026-74876 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-74876?

CVE-2026-74876 has a CVSS v3 severity of CRITICAL (9.8).

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CVE-2026-74876

Description

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.