CVE-2026-116811EUVD-2026-110519
OpenPanel before 3.0.0 Sandbox Escape RCE via Webhook JavaScript Template
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 3.0.0
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
OpenPanel, a web hosting control panel, is affected, specifically its JavaScript runtime used for webhook templates in versions before 3.0.0. A project member with write access can escape the restricted sandbox and run arbitrary code on the server's worker process, potentially gaining control over the host.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
OpenPanel before 3.0.0 contains a sandbox escape vulnerability in the js-runtime validator that allows a project member to bypass the AST allowlist by aliasing the Function constructor. Attackers with write access can read payload.constructor.constructor into a local and call it to run arbitrary code in the worker process.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- Openpanel-dev openpanel
fixed in 3.0.0