GHSA-hvq6-2r72-p2x7: django-cms (CVE-2026-75526)

Package	Ecosystem	Affected	Fixed in
django-cms	PyPI	>=5.0.8, <5.0.9	5.0.9

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Versions 5.0.8 up to (but not including) 5.0.9 of django CMS are affected by a stored cross-site scripting flaw in the edit-mode rendering of plugin exceptions. An editor who can store HTML in data used by a plugin's short description, and whose plugin then raises an error during edit-mode rendering, can have that HTML run in another staff user's browser. Upgrade to django-cms 5.0.9 or later. Until then, limit plugin editing to fully trusted staff and fix or disable plugins that can be made to fail during edit-mode rendering.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
4.4	Medium	3.1	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0026, the 18th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:10 UTC First seen by agentprime
31 Oct 2026, 14:10 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.