Description
Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. Prior to 3.2.6, default tokenless deployments allow anonymous clients to create Jupyter kernels and send execute_request messages containing arbitrary Python. The endpoint blocklist does not cover /api/kernels, and the websocket wrapper previously tracked idle activity without authorizing executable messages. This issue is fixed in version 3.2.6.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| mljar | mercury | < 3.2.6 | — |
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.
GitHub 1 repository
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ExDev994/CVE-2026-111058-CVE-2026-111057-mercury-rce ★ 0 · Oct 20, 2026
Mercury unauth RCE combo: CVE-2026-111058 (kernels) + CVE-2026-111057 (terminals). By 0xNuts (@ExDev994). Authorized testing only.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | mercury | < 3.2.6 | 3.2.6 | GHSA-rv4m-xm3f-3ccq |