CVE-2026-74896CWE-693

CVE-2026-74896

Critical · published August 17, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
45.8
In the wild
Unconfirmed
What it is

openssl_encrypt versions before 1.4.0 contain a sandbox escape vulnerability in the DangerousPatternVisitor AST analyzer that fails to detect dunder attribute traversal techniques. Attackers can use __class__, __bases__, __subclasses__(), and __globals__ chains to access restricted functions and execute arbitrary system commands from plugin code.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
9.3 · 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
EPSS
0.00559 · 45.8th percentile
Weakness
CWE-693 · Protection Mechanism Failure
Published
2026-08-17T15:16Z
Affected products (1)
ProductVersionsFixed in
jahlives/openssl_encrypt< 1.4.01.4.0
References (3)
https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-w7gr-9g4g-33mx · [email protected]https://www.vulncheck.com/advisories/openssl-encrypt-before-sandbox-escape-via-dunder-attribute-traversal · [email protected]https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-w7gr-9g4g-33mx · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 17 AUG 11:04Z
    openssl_encrypt before 1.4.0 Sandbox Escape via Dunder Attribute Traversal
    cvelistv5