CVE-2026-81695 CRITICAL

CVE-2026-81695: openssl_encrypt before 1.4.9 Terminal Injection via key_id

Vendor Jahlives
Product openssl_encrypt
Weakness CWE-117
Published August 27, 2026
Last update August 27, 2026

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

openssl_encrypt versions before 1.4.9 fail to escape attacker-controlled key_id values printed to stderr during decrypt auto-detection. Attackers can craft encrypted files with malicious key_id containing escape sequences to repaint terminal output and forge authenticity verification blocks.

Key dates

02Disclosure timeline

August 27, 2026 CVE published
August 27, 2026 Record updated