OpenSSL Encrypt Vulnerability in Third-Party Plugin Execution
CVE-2026-81719

9.3CRITICAL

Key Information:

Vendor

Jahlives

Status
OpenSSL Encrypt
Vendor
CVE Published:
27 August 2026

What is CVE-2026-81719?

The OpenSSL Encrypt functionality prior to version 1.4.9 is susceptible to a vulnerability that permits arbitrary code execution through untrusted third-party plugins. The issue arises because the default signature policy allows the loading of unsigned and unverified plugins, leading to potential execution before the appropriate runtime sandbox is established. A bypassable denylist poses an additional risk, making it easier for attackers to exploit this weakness. Users importing malicious plugins unknowingly could allow arbitrary code to be run within their environment. The vulnerability was addressed in version 1.4.9 by enforcing a stricter signature policy for plugins.

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

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