Terminal Injection Vulnerability in OpenSSL_Encrypt Product by OpenSSL
CVE-2026-81695

9.3CRITICAL

Key Information:

Vendor

Jahlives

Status
OpenSSL Encrypt
Vendor
CVE Published:
27 August 2026

What is CVE-2026-81695?

A terminal injection vulnerability exists in versions of openssl_encrypt prior to 1.4.9. This issue arises from the failure to properly escape attacker-controlled key_id values printed to stderr during the decrypt auto-detection process. As a result, an attacker can craft encrypted files that include malicious key_id containing escape sequences, potentially allowing them to manipulate terminal output and forge authenticity verification blocks, which can seriously undermine system security.

Affected Version(s)

openssl_encrypt 0 < 1.4.9

openssl_encrypt 1.4.9

References

https://github.com/jahlives/openssl_encrypt/security/advi...
vendor-advisory
https://www.vulncheck.com/advisories/openssl-encrypt-befo...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.