CVE-2026-111057
CRITICALDescription
Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. From 3.0.0 until 3.2.4, a missing comma in BLOCKED_PATTERNS concatenates the /lab and /api/terminals regular-expression literals. Requests to /api/terminals therefore bypass the anonymous endpoint blocklist and reach Jupyter Server's terminal API. An unauthenticated attacker can use the resulting interactive operating-system shell to execute commands and access data available to the Mercury process. This issue is fixed in version 3.2.4.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Exploit Intelligence
Moderate risk: more likely to be exploited than 53% of all known CVEs.
References
Related Vulnerabilities
Other CWE-185 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2020-11034 | Medium | 6.1 | 7.6% | - | Fix |
| CVE-2015-8388 | High | 7.5 | 6.6% | - | Fix |
| CVE-2018-7536 | Medium | 5.3 | 4.6% | - | Fix |
| CVE-2018-7537 | Medium | 5.3 | 4.4% | - | Fix |
| CVE-2015-8389 | Critical | 9.8 | 3.9% | - | Fix |
| CVE-2018-7158 | High | 7.5 | 3.4% | - | Fix |
Common questions
How do I fix CVE-2026-111057?
No published fix for CVE-2026-111057 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-111057 being actively exploited?
Not that we know of. CVE-2026-111057 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.70% is the estimated probability that it will be exploited in the next 30 days. That is higher than 53% of all scored CVEs.
How severe is CVE-2026-111057?
CVE-2026-111057 has a CVSS v3 base score of 10.0, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-28.