A AegiFlow
CRITICALCVSS 9.8EPSS 0.4%

CVE-2026-111058

CVE-2026-111058 updated by NVD

Published
2026-10-19
Modified
2026-10-21
EPSS percentile
37%
Sources
github-advisory, nvd

Summary

Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. Prior to 3.2.6, default tokenless deployments allow anonymous clients to create Jupyter kernels and send execute_request messages containing arbitrary Python. The endpoint blocklist does not cover /api/kernels, and the websocket wrapper previously tracked idle activity without authorizing executable messages. This issue is fixed in version 3.2.6.

Affected packages

EcosystemPackageAffected versionsFixed versions
PyPImercury—3.2.6

Remediation: Upgrade to 3.2.6 or later.

References

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

CVE® is a registered trademark of The MITRE Corporation. CVE content reproduced under the CVE Terms of Use; copyright designation © MITRE.

EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.