PyPI/jupyterhub CVE-2026-40864: medium 5.4, EPSS 0.15%

JupyterHub has cross-origin form POSTs bypass XSRF (CWE-352)

Action: Upgrade jupyterhub to 5.4.5 or later.

pip install jupyterhub==5.4.5

Affected

Fixed versions

Sources

• osv: GHSA-m68r-v472-jgq9
• https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-m68r-v472-jgq9
• https://nvd.nist.gov/vuln/detail/CVE-2026-40864
• https://github.com/jupyterhub/jupyterhub/commit/9c5ec277d3cda5a59de2d8c8117efa77bd941127
• https://github.com/jupyterhub/jupyterhub

CVE-2026-40864 · published 2026-05-05T18:10:58Z · modified 2026-09-10T03:51:06.307577438Z · JSON