High severity · published Oct 26, 2026
CVE-2026-116811
OpenPanel before 3.0.0 Sandbox Escape RCE via Webhook JavaScript Template
New
8.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
openpanel · Openpanel-dev
before 3.0.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116811
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116811
github.com
https://github.com/Openpanel-dev/openpanel/commit/42fc8623b5c5c30f0b89686451c0c5ab13046b81
github.com
https://github.com/Openpanel-dev/openpanel/security/advisories/GHSA-mc99-9jf5-22cq
www.vulncheck.com
https://www.vulncheck.com/advisories/openpanel-before-3.0.0-sandbox-escape-rce-via-webhook-javascript-template
More from openpanel
9.9
CVE-2026-93985
OpenPanel js-runtime through 2.3.0 JavaScript Template Sandbox Escape RCE
8.8
CVE-2026-85610
OpenPanel before 2.3.0 Remote Code Execution via chart formulas
8.6
CVE-2026-85614
OpenPanel API before 2.3.0 Unauthenticated SSRF via site-checker
8.5
CVE-2026-116819
OpenPanel before 3.0.0 Credential Disclosure via notification.rules Query
8.5
CVE-2026-88890
OpenPanel through 2.3.0 SQL Injection via unvalidated profile filter column identifier