CVE-2026-111057 Mercury - Command Injection

Mercury 3.0.0 to 3.2.4 contains a command injection caused by a missing comma in BLOCKED_PATTERNS concatenating regex literals, letting unauthenticated attackers execute commands via Jupyter Server's terminal API, exploit requires no authentication.

CVSS base score 10.0 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
19 October 2026
Updated
20 October 2026
Weakness
CWE-185

Vendor fix

Update to version 3.2.4 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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