CVE-2026-74896
Sandbox escape in openssl_encrypt AST enables arbitrary system command execution.
Is CVE-2026-74896 being exploited?
Not confirmed. CVE-2026-74896 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.34% probability of exploitation in the next 30 days.
How severe is CVE-2026-74896?
CVE-2026-74896 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-74896?
Yes. A fix has been recorded for CVE-2026-74896. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-74896 affect?
CVE-2026-74896 affects openssl_encrypt < 1.4.0, applications using DangerousPatternVisitor AST analyzer, plugin sandboxes relying on openssl_encrypt. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-74896?
Upgrade to openssl_encrypt >=1.4.0; audit and restrict plugin code execution.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attackers can escape plugin sandbox via __class__/__globals__ traversal to execute arbitrary system commands (RCE) from plugin code.
Immediate action required
- affected< 1.4.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.