> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/xsoar-8-opp-release-notes/8.9/maintenance-releases-in-cortex-xsoar-8.9.md). # Maintenance Releases in Cortex XSOAR 8.9 #### August 10, 2026 (master-8.9.0-8.9.0.183-7e6598ce) This maintenance release includes the following bug fix: * Fixed an issue where the apt package upgrade caused system upgrade to fail. #### July 13, 2026 (master-8.9.0-8.9.0.182-e79ed3b2) This maintenance release includes the following bug fixes: * Fixed multiple upgrade and infrastructure issues. * Added one-click sequential upgrades to enable upgrade to a target version in a single action from the textual UI. #### January 15, 2026 (master-8.9.0-8.9.0.175-47550265) This maintenance release includes the following bug fix: * Fixed an issue where accumulated audit logs consumed disk space and impacted system stability. The system now automatically compresses audit logs and retains them for six months before deletion. #### November 5, 2025 (master-8.9.0-8.9.0.173-318d829c) This maintenance release includes the following bug fixes: * A security setting that could permanently lock out default Linux admin and viewer system users was fixed, ensuring these users can now change their passwords after expiration without being locked out. * Updated base OS dependencies to address known vulnerabilities. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://cortex-docs.paloaltonetworks.com/xsoar-8-opp-release-notes/8.9/maintenance-releases-in-cortex-xsoar-8.9.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.