# XSAs released on 2026-11-06

DevFeed: [XSAs released on 2026-11-06](<https://devfeed.tech/articles/xsas-released-on-2026-11-06-122323.md>)

Original publisher: [Read original article](<https://www.qubes-os.org/news/2026/11/08/xsas-released-on-2026-11-06/>)

Published: 2026-11-08T00:00:00Z

Content type: release

Language: en

Sources: [Qubes OS](<https://devfeed.tech/sources/qubes-os.md>)

Topics: [Xen](<https://devfeed.tech/topics/xen.md>)

Tags: [2026](<https://devfeed.tech/tags/2026.md>), [security](<https://devfeed.tech/tags/security.md>), [security-advisories](<https://devfeed.tech/tags/security-advisories.md>), [security-advisory](<https://devfeed.tech/tags/security-advisory.md>), [xen](<https://devfeed.tech/tags/xen.md>)

## AI overview

The Xen Project released XSAs on 2026-11-06, and the supplied summary says none affect Qubes OS; XSA-526, XSA-527, and XSA-528 are described as denial-of-service only, with no user action necessary. Qubes OS tracks XSAs because Xen vulnerabilities can sometimes affect it, while Qubes security bulletins confirm affected advisories but cannot confirm unaffected ones. The excerpt omits the XSA list, so those advisory details rely on the supplied summary.

## Source excerpt

The Xen Project has released one or more Xen security advisories (XSAs). The security of Qubes OS is not affected. XSAs that DO affect the security of Qubes OS The following XSAs do affect the security of Qubes OS: (none) XSAs that DO NOT affect the security of Qubes OS The following XSAs do not affect the security of Qubes OS, and no user action is necessary: XSA-526: Denial of service only. XSA-527: Denial of service only. XSA-528: Denial of service only. About this announcement Qubes OS uses the Xen hypervisor as part of its architecture. When the Xen Project publicly discloses a vulnerability in the Xen hypervisor, they issue a notice called a Xen security advisory (XSA). Vulnerabilities in the Xen hypervisor sometimes have security implications for Qubes OS. When they do, we issue a notice called a Qubes security bulletin (QSB). (QSBs are also issued for non-Xen vulnerabilities.) However, QSBs can provide only positive confirmation that certain XSAs do affect the security of Qubes OS. QSBs cannot provide negative confirmation that other XSAs do not affect the security of Qubes OS. Therefore, we also maintain an XSA tracker, which is a comprehensive list of all XSAs publicly disclosed to date, including whether each one affects the security of Qubes OS. When new XSAs are published, we add them to the XSA tracker and publish a notice like this one in order to inform Qubes users that a new batch of XSAs has been released and whether each one affects the security of Qubes OS.