Description
A security vulnerability has been detected in onyx-dot-app Onyx up to 5.0.0. Impacted is an unknown function of the file web/src/app/craft/components/output-panel/PreviewTab.tsx. The manipulation leads to cross site scripting. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| onyx-dot-app | Onyx | 5.0 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
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capivara-research/CVE-2026-116004 ★ 0 · Oct 26, 2026
Safe PoC and technical analysis for CVE-2026-116004
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- VDB-426102 | onyx-dot-app Onyx PreviewTab.tsx cross site scripting vdb-entry
- VDB-426102 | CTI Indicators (IOB, IOC, TTP, IOA) signature permissions-required
- CVE-2026-116004 | CVE Analysis and Report third-party-advisory
- Submit #992835 | onyx-dot-app Onyx Craft main commit 711a0479f1630dcce38f8f58212a63080702b753 Same-Origin Iframe Sandbox Bypass / Stored Cross-Site Scripting third-party-advisory
- https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-grhq-88h5-2h86 broken-link
- https://github.com/onyx-dot-app/onyx/ product