CVE-2026-111057

Published: Oct 19, 2026Modified: Oct 19, 2026Deferred

10.0

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 6.0

Source: security-advisories@github.com (Secondary)

Description

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.

Related CWEs

CWE-185

Incorrect Regular Expression

The product specifies a regular expression in a way that causes data to be improperly matched or compared.

CWE-284

Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

References (3)

https://github.com/mljar/mercury/commit/8c467129037ee9df269d543ac217ffd33b97bf3f

Source: security-advisories@github.com

https://github.com/mljar/mercury/releases/tag/v3.2.4

Source: security-advisories@github.com

https://github.com/mljar/mercury/security/advisories/GHSA-f8c7-rwf9-fmgm

Source: security-advisories@github.com

Timeline

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