Critical 10.0Published Oct 19, 2026

CVE-2026-111057Mercury: Unauthenticated Remote Code Execution in /api/terminals - access control bypass

Updated under an hour ago (2026-10-21 03:20 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for mljar mercury

Exploited in the last 30 days

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.

CVSS: 10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-185, CWE-284
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

mljar mercury mljar:mercury (from the name)	from 3.0.0, < 3.2.4	CNA record

References

https://github.com/mljar/mercury/security/advisories/GHSA-f8c7-rwf9-fmgmx-refsource-confirm
https://github.com/mljar/mercury/commit/8c467129037ee9df269d543ac217ffd33b97bf3fx-refsource-misc
https://github.com/mljar/mercury/releases/tag/v3.2.4x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.