RCE in Mervinpraison Praisonai
CVE-2026-61438
PraisonAI before 4.6.78 contains a remote code execution vulnerability in JobWorkflowExecutor._exec_inline_python() due to insufficient AST validation of workflow script steps. Attackers can create malicious YAML workflow files with import os statements followed by os.system() calls that bypass sandbox checks and execute arbitrary OS commands with process privileges.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (21.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Mervinpraison Praisonai — versions 0, 4.6.78
Weakness classification (CWE)
References
- github.com/MervinPraison/PraisonAI/security/advisories/GHSA-26mh-57q7-jfvr (vendor-advisory)
- www.vulncheck.com/advisories/praisonai-before-remote-code-execution-via-broken-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-61438?
- CVE-2026-61438 is a high-severity vulnerability in Mervinpraison Praisonai, classified under OS Command Injection. CVSS score: 7.3/10. Published 2026-07-15.
- How severe is CVE-2026-61438?
- High severity. CVSS v3 base score is 7.3 out of 10.