# \[ANN\] JupyterHub 5.5, chart 4.4

**URL:** <https://discourse.jupyter.org/t/ann-jupyterhub-5-5-chart-4-4/38704>\
**Category:** JupyterHub\
**Tags:** announcement, release\
**Created:** [June 10, 2026, 10:50pm UTC](https://discourse.jupyter.org/t/ann-jupyterhub-5-5-chart-4-4/38704 "2026-06-10T22:50:49Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![minrk](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.jupyter.org/minrk/32/13_2.png) [@minrk](https://discourse.jupyter.org/u/minrk)\
**Post date:** [June 10, 2026, 10:50pm UTC](https://discourse.jupyter.org/t/ann-jupyterhub-5-5-chart-4-4/38704/1 "2026-06-10T22:50:49Z")

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JupyterHub 5.5 and jupyterhub helm chart 4.4 are out, fixing a moderate-severity denial of service vulnerability, as well as backporting a number of bugfixes from the upcoming 6.0 branch.

- [GHSA-p43p-whwx-q52h](https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-p43p-whwx-q52h) (CVE pending): Denial of service vulnerability in JupyterHub

The advisory will be published in 7 days, and the CVE updated when it has been issued.