Authenticated host command execution via frame traversal
Published Apr 8, 2026 · Updated Apr 8, 2026
Sandbox escape in praisonaiagents before 1.5.115 allows remote authenticated users to execute arbitrary host commands through execute_code. Subprocess mode uses an 11-name AST attribute blocklist that omits traceback, tb_frame, f_back, and f_builtins, letting a caught exception expose the wrapper frame's real builtins and recover exec. An attacker needs access to submit code through an agent; exploitation runs commands as the subprocess user and permits host file access, modification, and service interruption.
Summary
What happened
Sandbox escape in praisonaiagents before 1.5.115 allows remote authenticated users to execute arbitrary host commands through execute_code. Subprocess mode uses an 11-name AST attribute blocklist that omits traceback, tb_frame, f_back, and f_builtins, letting a caught exception expose the wrapper frame's real builtins and recover exec. An attacker needs access to submit code through an agent; exploitation runs commands as the subprocess user and permits host file access, modification, and service interruption.
The record
- CVE
- CVE-2026-39888
- Published
- Apr 8, 2026
- Updated
- Apr 8, 2026
- Vendor
- Mervin Praison
- Product
- praisonaiagents
- Classifications
- CWE-693, CWE-657, T1059.006
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 8, 2026CVE publishedPublication date reported by the CVE source.
- Apr 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 1.5.115
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GHSA-qf73-2hrx-xprp exception-frame traversal proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo