{"id":"CVE-2026-116811","kind":"vulnerability","aliases":["CVE-2026-116811"],"related":[],"title":"OpenPanel: js-runtime sandbox escape lets project members run code","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.","summary":"OpenPanel before 3.0.0 has a sandbox escape in its js-runtime validator: the AST allowlist can be bypassed by aliasing the Function constructor. A project member with write access can then run arbitrary code in the worker process.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["node","openpanel","runtime","self-hosted"],"not_affected_if":["version-3.0.0-or-later"],"how_to_check":"- Check the installed OpenPanel version; versions before `3.0.0` are affected.\n- unknown for other exposure details; the sources do not say which deployments enable the js-runtime.","fix":"- Upgrade OpenPanel to `3.0.0` or later.\n- unknown for interim mitigations; the sources do not say.","status":"open","published_at":"2026-10-27T00:17:14+00:00","first_seen_at":"2026-10-27T00:25:55+00:00","triaged_at":"2026-10-27T00:26:13+00:00","updated_at":"2026-10-27T00:26:13+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-10-27T00:26:13Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade OpenPanel to `3.0.0` or later.\n- unknown for interim mitigations; the sources do not say.","reach":"network","title":"OpenPanel: js-runtime sandbox escape lets project members run code","impact":"high","summary":"OpenPanel before 3.0.0 has a sandbox escape in its js-runtime validator: the AST allowlist can be bypassed by aliasing the Function constructor. A project member with write access can then run arbitrary code in the worker process.","category":"runtime","nicknames":[],"who_cares":["openpanel","self-hosted","node"],"confidence":0.6,"needs_auth":"yes","worst_case":"Arbitrary code runs in the OpenPanel worker process.","analyst_note":"Confirm whether the js-runtime is enabled by default and check the advisory or fix commit at the NVD link for exact affected config.","how_to_check":"- Check the installed OpenPanel version; versions before `3.0.0` are affected.\n- unknown for other exposure details; the sources do not say which deployments enable the js-runtime.","needs_analyst":true,"not_affected_if":["version-3.0.0-or-later"],"who_is_affected":"Teams running self-hosted OpenPanel before 3.0.0 where project members can write js-runtime code. The sources do not say whether the js-runtime is enabled by default. Instances on 3.0.0 or later are not affected.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000596,"input_tokens":3327,"output_tokens":526,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-116811':14A,17A '-2026':13A,16A '3.0.0':26B,65C 'access':53B,95C 'alias':44B,88C 'allow':78C 'allowlist':39B,86C 'arbitrari':57B,107C 'ast':38B,85C 'attack':92C 'bypass':42B,83C 'call':103C 'code':11A,58B,108C 'constructor':47B,91C 'contain':66C 'cve':12A,15A 'escap':6A,30B,69C 'function':46B,90C 'host':23B 'js':3A,34B,74C 'js-runtim':2A,33B,73C 'let':7A 'local':101C 'member':9A,50B,81C 'node':18B 'openpanel':1A,19B,24B,63C 'payload.constructor.constructor':98C 'process':62B,112C 'project':8A,49B,80C 'read':97C 'run':10A,56B,106C 'runtim':4A,20B,35B,75C 'sandbox':5A,29B,68C 'self':22B 'self-host':21B 'valid':36B,76C 'vulner':70C 'worker':61B,111C 'write':52B,94C","nicknames":[],"mitigations":[],"who_affected":"Teams running self-hosted OpenPanel before 3.0.0 where project members can write js-runtime code. The sources do not say whether the js-runtime is enabled by default. Instances on 3.0.0 or later are not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T00:17:14+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-116811","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116811","severity":null,"published_at":"2026-10-27T00:17:14+00:00","modified_at":"2026-10-27T00:17:14+00:00","first_seen_at":"2026-10-27T00:25:55+00:00","fetched_at":"2026-10-27T00:25:55+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}