CVE-2026-74899 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-74899CRITICAL

jahlives openssl_encrypt — openssl_encrypt before 1.4.0 Sandbox Escape via Type Hierarchy

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   H   H   H    9.3   .0039   32.2     —

AFFECTED
  Product          Versions     Fixed
  openssl_encrypt  unspecified  1.4.0

TIMELINE
  Aug 16  EXPLOIT PUBLISHED — CVE-2026-74899 (jahlives openssl_encrypt). Public exploit reference added.
  Aug 17  Reserved by VulnCheck
  Aug 17  Published (CNA: VulnCheck)
  Aug 18  EXPLOIT PUBLISHED — CVE-2026-74899 (jahlives openssl_encrypt). Public exploit reference added.

CWE-95 · CNA: VulnCheck · CVSS v4.0 · 3 references · NVD status: Received

Description

openssl_encrypt versions before 1.4.0 contain a sandbox escape vulnerability in IsolatedPluginExecutor that exposes Python type objects in restricted exec() builtins. Attackers can traverse the Python class hierarchy via __class__.__mro__.__subclasses__() to access system functions and execute arbitrary OS commands.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
August 16, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-74899 (jahlives openssl_encrypt). Public exploit reference added.
August 17, 2026	Reserved	Reserved by VulnCheck
August 17, 2026	Published	Published (CNA: VulnCheck)
August 18, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-74899 (jahlives openssl_encrypt). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
jahlives	openssl_encrypt	—	—	1.4.0

Weaknesses

CWE-95

References (3)

Authoritative record: CVE-2026-74899 at cve.org

Vendors: jahlives

Weaknesses: CWE-95

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-74899 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.