CVE-2026-111057

critical · 10

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

0.4%

EPSS (exploit prob.)

38th

EPSS percentile

2026-10-19

Published

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

Weaknesses

CWE-185CWE-284

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-111057