Sandbox Escape Vulnerability in OpenSSL Encrypt by OpenSSL
CVE-2026-74896

9.3CRITICAL

Key Information:

Vendor

Jahlives

Status
OpenSSL Encrypt
Vendor
CVE Published:
17 August 2026

What is CVE-2026-74896?

The OpenSSL Encrypt library, specifically versions prior to 1.4.0, is vulnerable to a sandbox escape due to insufficient detection of dunder attribute traversal techniques within the DangerousPatternVisitor AST analyzer. This oversight allows attackers to utilize chains involving class, bases, subclasses(), and globals to access sensitive functions, potentially leading to the execution of arbitrary system commands executed from the plugin code. Mitigating this vulnerability is critical to maintaining the integrity and security of applications utilizing OpenSSL Encrypt.

Affected Version(s)

openssl_encrypt 0 < 1.4.0

openssl_encrypt 1.4.0

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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