CVE-2026-111057

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 v3 10.0 CRITICAL

10.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/mljar/mercury/commit/8c467129037ee9df269d543ac217ffd33b97bf3f
https://github.com/mljar/mercury/releases/tag/v3.2.4
https://github.com/mljar/mercury/security/advisories/GHSA-f8c7-rwf9-fmgm
https://github.com/mljar/mercury/security/advisories/GHSA-f8c7-rwf9-fmgm

Configurations

No configuration.

History

28 Oct 2026, 16:17

Type	Values Removed	Values Added
References	~~() https://github.com/mljar/mercury/security/advisories/GHSA-f8c7-rwf9-fmgm -~~	() https://github.com/mljar/mercury/security/advisories/GHSA-f8c7-rwf9-fmgm -

19 Oct 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-19 16:17

Updated : 2026-10-28 16:17

NVD link : CVE-2026-111057

Mitre link : CVE-2026-111057

CVE.ORG link : CVE-2026-111057

JSON object : View

Products Affected

No product.

CWE

CWE-185

Incorrect Regular Expression

CWE-284

Improper Access Control

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