CVE-2026-81706
MediumCVSS 6.8Summary
openssl_encrypt before 1.4.9 fails to prevent namespace collisions between own identities and contacts in IdentityStore, allowing attackers to create shadowed contact entries invisible until the corresponding own identity is deleted. When the own identity is deleted, the shadowed contact becomes visible and resolves to the attacker's keys, enabling silent key substitution for encrypted files.
Risk Assessment
The risk includes the possibility of silent key substitution, which could allow an attacker to decrypt or manipulate encrypted files. This could lead to breach of data confidentiality and integrity.
Recommendation
It is recommended to update openssl_encrypt to version 1.4.9 or later, which includes the fix. Also review existing identities and contacts for suspicious entries.
Original NVD description (English source)
openssl_encrypt before 1.4.9 fails to prevent namespace collisions between own identities and contacts in IdentityStore, allowing attackers to create shadowed contact entries invisible until the corresponding own identity is deleted. When the own identity is deleted, the shadowed contact becomes visible and resolves to the attacker's keys, enabling silent key substitution for encrypted files.