CVE-2026-47398
RCE via unguarded YAML module execution in PraisonAI versions prior to 4.6.40.
Is CVE-2026-47398 being exploited?
Not confirmed. CVE-2026-47398 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 0.57% probability of exploitation in the next 30 days.
How severe is CVE-2026-47398?
CVE-2026-47398 is rated High with a CVSS score of 8.1. 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-2026-47398?
Yes. A fix has been recorded for CVE-2026-47398. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-47398 affect?
CVE-2026-47398 affects PraisonAI < 4.6.40, praisonai/agents_generator.py (unguarded spec.loader.exec_module sites). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-47398?
Upgrade to PraisonAI 4.6.40 and restrict/validate YAML module inputs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attackers supplying a malicious YAML module_path can achieve arbitrary code execution on hosts, enabling full system compromise and lateral movement.
Immediate action required
- affected< 4.6.40
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.