CVE-2026-81707
CriticalCVSS 9.8Summary
openssl_encrypt before 1.4.9 fails to sanitize the email field of imported identity documents, allowing attackers to inject ANSI escape sequences that forge the fingerprint verification line. Attackers can deliver crafted identity bundles to manipulate terminal output and display a fraudulent fingerprint, bypassing out-of-band verification.
Risk Assessment
An attacker can forge fingerprint verification, enabling public key substitution and communication interception without user detection.
Recommendation
Update openssl_encrypt to version 1.4.9 or later, which includes the email field sanitization fix.
Original NVD description (English source)
openssl_encrypt before 1.4.9 fails to sanitize the email field of imported identity documents, allowing attackers to inject ANSI escape sequences that forge the fingerprint verification line displayed to users. Attackers can deliver a crafted identity bundle through normal contact-exchange flows or keyserver responses to manipulate terminal output and display a fraudulent fingerprint, bypassing the out-of-band verification mechanism that protects against key substitution attacks.