Vulnerability · Published Aug 17, 2026 · Assigned by VulnCheck
CVE-2026-74895openssl_encrypt before 1.4.0 Plugin Sandbox Bypass via Process Isolation
Critical 9.8
In plain English
A critical-severity security flaw in openssl_encrypt from jahlives. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.7%top 47.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
openssl_encrypt versions before 1.4.0 fail to apply sandbox restrictions in the default process isolation mode for plugin execution. Attackers can execute malicious plugins with unrestricted access to the filesystem, network, subprocess execution, and all Python modules.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | openssl-encrypt | 1.4.0 | PYSEC-2026-3770 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| jahlives | openssl_encrypt | 0 – before 1.4.0 |
Weakness: CWE-693 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- GitHub Security Advisory (GHSA-623h-chj7-hfx8) vendor-advisory
- VulnCheck Advisory: openssl_encrypt before 1.4.0 Plugin Sandbox Bypass via Process Isolation third-party-advisory