We released Zulip Server 10.2 today! This is a security release, fixing a critical security issue (CVE-2025-31478), as well as several bugs, most importantly a collection of issues that prevented servers using some S3-compatible block storage services from successfully uploading files on Zulip Server …| The Zulip Blog
We released Zulip Server 9.3 today! This is a bug fix release, containing cherry-picked changes since Zulip Server 9.2. Upgrading We recommend that all installations upgrade to this new release. See the upgrade instructions in the Zulip documentation. Commercial support for server upgrades is available …| The Zulip Blog
We released Zulip Server 8.3 today! This is a security release, containing important security fixes and cherry-picked changes since Zulip Server 8.2. Upgrading We recommend that all installations upgrade to this new release. See the upgrade instructions in the Zulip documentation. If you need help, …| The Zulip Blog
We released Zulip Server 8.4 today! This is a bug fix release, containing cherry-picked changes since Zulip Server 8.3. Upgrading We recommend that all installations upgrade to this new release. See the upgrade instructions in the Zulip documentation. If you need help, best-effort support is available …| The Zulip Blog
We released Zulip Server 8.1 today! This is a security release, containing important security fixes and cherry-picked changes since Zulip Server 8.0. Upgrading We recommend that all installations upgrade to this new release. See the upgrade instructions in the Zulip documentation. If you need help, …| The Zulip Blog
We released Zulip Server 7.3 today! This is a security release, containing important security fixes and cherry-picked changes since Zulip Server 7.2. Upgrading We recommend that all installations upgrade to this new release. See the upgrade instructions in the Zulip documentation. If you need help, …| The Zulip Blog
We released Zulip Server 6.1 today! This is a bugfix release, containing cherry-picked changes since Zulip Server 6.0. Upgrading We recommend that all installations upgrade to this new release. See the upgrade instructions in the Zulip documentation. If you need help, best-effort support is available …| The Zulip Blog
We’re excited to announce the release of Zulip Server 4.0, containing hundreds of new features and bug fixes! Zulip is an open-source team collaboration tool with unique topic-based threading that combines the best of email and chat to make remote work productive and delightful. Fortune 500 companies, …| The Zulip Blog
We released Zulip Server 7.4 today! This is a security release, containing important security fixes and cherry-picked changes since Zulip Server 7.3. Upgrading We recommend that all installations upgrade to this new release. See the upgrade instructions in the Zulip documentation. If you need help, …| The Zulip Blog
We released Zulip Server 4.6 today! This is a bug fix release, containing a few dozen cherry-picked changes since Zulip Server 4.5. What’s new This release fixes the following issues: Documented official support for Debian 11 Bullseye, now that it is officially released by Debian upstream. Fixed installation …| The Zulip Blog
We released Zulip Server 4.4 today! This is a security release, containing important security fixes, as well as important cherry-picked bug fixes, since Zulip Server 4.3. What’s new This release fixes the following issues: Added a tool to fix potential database corruption caused by host OS upgrades; …| The Zulip Blog
We’re excited to announce the release of Zulip Server 3.0, containing hundreds of new features and bug fixes to help distributed and remote teams stay productive and focused. Zulip is the open-source threaded team chat app, used by thousands of teams globally. Zulip’s unique topic-based threading experience …| The Zulip Blog
We released Zulip Server 2.1.5 today. This is a security release, containing a dozen cherry-picked changes since Zulip Server 2.1.4. What’s new This releases fixes several important bugs in previous versions of Zulip. It contains fixes for the following issues: CVE-2020-12759: Fix reflected XSS vulnerability …| The Zulip Blog
We released Zulip Server 2.1.3 today. This is a security release, containing a few dozen cherry-picked changes since Zulip 2.1.2. What’s new This releases fixes several important bugs in previous versions of Zulip. It contains fixes for the following issues: CVE-2020-9444: Reverse tabnabbing vulnerability …| The Zulip Blog
Today we released Zulip Desktop 5.0.0, fixing multiple critical security issues as well as several other important issues: CVE-2020-10856: Remote code execution due to missing context isolation. CVE-2020-10857: Remote code execution due to unsafe use of shell.openExternal and shell.openItem. Downloaded …| The Zulip Blog
Today we released Zulip Desktop 4.0.3, fixing a critical security issue: CVE-2020-9443: Web security was disabled in the Electron webview. This is a critical security issue because Zulip’s security model for uploaded files relies on the browser (in this case Electron) enforcing the web security model. …| The Zulip Blog
We’re excited to announce the release of Zulip Server 2.1, containing hundreds of new features and bug fixes. Zulip is the world’s most productive team chat software, used by thousands of teams as an alternative to Slack, HipChat, Mattermost and IRC. Zulip’s unique topic-based threading combines the …| The Zulip Blog
We released Zulip Server 2.0.7 today. This is a security release, containing a handful of cherry-picked changes since Zulip 2.0.6. What’s new This release fixes an important security bug in previous versions of Zulip. Quoting from the commit fixing it: CVE-2019-18933: Fix insecure account creation via …| The Zulip Blog
We’re excited to announce the release of Zulip Server 2.0, containing hundreds of new features and bug fixes. Zulip is the world’s most productive team chat software, used by thousands of teams as an alternative to Slack, HipChat, Mattermost and IRC. Zulip’s unique topic-based threading combines the …| The Zulip Blog
We’re excited to announce the release of Zulip Server 1.9, containing hundreds of new features and bug fixes. Especially relevant for users migrating from the recently discontinued HipChat is our new HipChat data import tool. Zulip is the world’s most productive team chat software, an alternative to …| The Zulip Blog
Today we’re releasing Zulip Server 1.8.1. This is a bug fix release, containing a few dozen cherry-picked changes since 1.8.0. What’s new The highlights of this release are primarily for folks installing a new Zulip server: a tool for automatically registering for push notifications, and a bunch of …| The Zulip Blog
We’re excited to announce the release of Zulip Server 1.8, containing hundreds of new features and bug fixes. Zulip is the world’s most productive team chat software, an alternative to Slack, HipChat, and IRC. Zulip combines the immediacy of chat with the asynchronous efficiency of email-style threading, …| The Zulip Blog
Today we’re releasing Zulip Server 1.7.1. This is a security release, containing just a handful of cherry-picked changes since 1.7.0. To readers in the US: happy Thanksgiving! We generally avoid making a security release just before a major holiday, but we’ve made an exception in this case because the …| The Zulip Blog
We’re excited to announce the release of Zulip Server 1.7, containing hundreds of new features and bug fixes. Zulip is the world’s most productive team chat software, an alternative to Slack, HipChat, and IRC. Zulip combines the immediacy of chat with the asynchronous efficiency of email, and is 100% …| The Zulip Blog
We’re excited to announce the release of Zulip Server 1.6.0, containing hundreds of new features and bug fixes. Zulip is the world’s most productive group chat software. Zulip combines the immediacy of chat with the asynchronous efficiency of email, and is 100% free and open source software. This is …| The Zulip Blog
We released Zulip Server 5.6 today! This is a security release, containing an important security fix and several cherry-picked changes since Zulip Server 5.5. Upgrading We recommend that all installations upgrade to this new release. See the upgrade instructions in the Zulip documentation. If you need …| The Zulip Blog
We released Zulip Server 5.2 today! This is a bugfix release, containing cherry-picked changes since Zulip Server 5.1. Upgrading We recommend that all installations upgrade to this new release. See the upgrade instructions in the Zulip documentation. If you need help, best-effort support is available …| The Zulip Blog
We released Zulip Server 4.9 today! This is a security release, containing critical security fixes, as well as important cherry-picked bug fixes, since Zulip Server 4.8. Upgrading We strongly recommend that all installations upgrade to this new release. See the upgrade instructions in the Zulip documentation. …| The Zulip Blog
This is an important security announcement for Zulip installations running the main (development) branch of the Zulip server. The main branch of Zulip Server, since a commit merged on December 4th, was vulnerable to a stored cross-site scripting vulnerability in stream names. A malicious user with permission …| The Zulip Blog
We released Zulip Server 4.8 today! This is a security release, containing important security fixes, as well as important cherry-picked bug fixes, since Zulip Server 4.7. Deprecating support for Ubuntu 18.04 Bionic With this release, we are deprecating support for Ubuntu 18.04 Bionic. Specifically, …| The Zulip Blog
