osTicket | Support Ticketing System

osTicket v1.18.3 / v1.17.7 Available

Thu, 15 Jan 2026 14:35:12 +0000

We’re happy to announce the release of osTicket v1.18.3, which includes several updates we recommend applying to your helpdesk. This release delivers important security updates, general bug fixes, and continued compatibility with PHP 8.3 and 8.4.

For full details on what’s changed, including improvements and fixes, please review the complete release notes.

Requirements

To use modern email authentication, the OAuth2 Plugin is required. Please note that this release supports PHP versions 8.2 through 8.4.

We’ve published step-by-step guides for configuring both OAuth Authorization and OAuth Authentication on our documentation site to help with setup.

Upgrading Your Helpdesk

Note: Before upgrading osTicket, confirm that your server’s PHP version is supported. All osTicket versions v1.17 and newer require PHP 8.2–8.4.

You can follow our upgrade guide for detailed instructions on updating an existing helpdesk. New users can download osTicket and proceed using the installation guide.

Be sure to update any installed plugins and language packs as part of the upgrade process.

Note: The OAuth2 Plugin must be installed to take advantage of modern authentication features.

If managing your osTicket environment has become time-consuming, consider switching to osTicket as a hosted service. We can even migrate data from your existing installation. With SupportSystem’s fully managed infrastructure, you get a secure, stable osTicket setup—without the overhead of ongoing maintenance—so you can stay focused on supporting your customers.

Maintenance Releases

For users who are not ready to move to the latest feature release, we strongly recommend upgrading to the current maintenance release, v1.17.7. This update addresses security vulnerabilities present in earlier versions. These same fixes are also included in v1.18.3.

Need assistance? Contact us to learn more about our professional support options.

Latest Development

To stay informed about what’s coming next, follow the osTicket Roadmap on GitHub for ongoing development updates.

Cheers,
The osTicket Team

osTicket v1.18.2/v1.17.6 Available

Tue, 04 Feb 2025 16:27:46 +0000

osTicket v1.18.2 has been released and includes changes that you should make sure are added to your helpdesk. This release includes important security fixes, bug fixes, and support for PHP 8.3 and 8.4. We have also updated all of the plugins and language packs. For a complete list of improvements, fixes, and changes please check our release notes.

Requirements

In order to use Modern Authentication for emails, you must use the OAuth2 Plugin. Please note that this version requires PHP 8.2-8.4.

We have provided guides for setting up OAuth Authorization as well as OAuth Authentication on our documentation website.

Upgrading Your Helpdesk

Note: Before upgrading osTicket, be sure to check your PHP version to make sure it is compatible. osTicket v1.17+ requires PHP 8.2-8.4.

You can check out the upgrade guide for complete instructions on how to upgrade your helpdesk. If you are installing osTicket for the first time, then simply download osTicket and follow the installation guide.

Please be sure to upgrade your plugins as well as any language packs you have installed.

Note: You will need to download the OAuth2 Plugin in order to use modern authentication.

If maintaining your osTicket installation is becoming daunting, we would encourage you to consider osTicket as a hosted service – we can even import data from your current installation. With SupportSystem’s turnkey infrastructure, you get osTicket at its best, leaving you free to focus on your customers without the burden of making sure the application is stable, maintained, and secure.

Maintenance Releases

For osTicket users who are unable or unwilling to upgrade, we highly recommend upgrading to the maintenance release, v1.17.6. These new maintenance releases address security vulnerabilities affecting prior releases. These fixes have also been integrated into v1.18.2.

Need help? – Contact us for professional support.

Latest Development

To keep up with future development in the works for osTicket, feel free to follow our osTicket Roadmap on GitHub.

Cheers,

The osTicket Team.

osTicket v1.18.1/v1.17.5 Available

Wed, 25 Oct 2023 13:43:42 +0000

osTicket v1.18.1 has been released and includes important fixes that you should make sure are added to your helpdesk. We have also updated the language packs and plugins!

For a complete list of improvements, fixes, and changes please check our release notes.

!!IMPORTANT!!

Microsoft and Google are phasing out Basic Authentication (username + password) for Modern Authentication (OAuth2). These changes will require setting up version 1.17+, upgrading to PHP 8.0-8.2, and installing the OAuth2 Plugin which will eliminate the need to store email passwords locally and will instead redirect you directly to the provider to login. Detailed guides for setting up the plugin can be found on our documentation website.

Requirements

In order to use Modern Authentication for emails, you must use the OAuth2 Plugin. Please note that this version requires PHP 8.0-8.2.

We have provided guides for setting up OAuth Authorization as well as OAuth Authentication on our documentation website.

Upgrading Your Testing Helpdesk

Note: Before upgrading osTicket, be sure to check your PHP version to make sure it is compatible. osTicket v1.17+ requires PHP 8.0-8.2.

Please be sure to upgrade your plugins as well as any language packs you have installed.

Note: You will need to download the OAuth2 Plugin in order to use modern authentication.

Maintenance Releases

For osTicket users who are unable or unwilling to upgrade, we highly recommend upgrading to the maintenance release, v1.17.5. These new maintenance releases address security vulnerabilities affecting prior releases. These fixes have also been integrated into v1.18.1.

Need help? – Contact us for professional support.

Latest Development

To keep up with future development in the works for osTicket, feel free to follow our osTicket Roadmap on GitHub.

Cheers,

The osTicket Team.

osTicket v1.18.0/v1.17.4 Available

Mon, 12 Jun 2023 13:46:42 +0000

osTicket v1.18.0 has been released and includes important fixes that you should make sure are added to your helpdesk. We have also updated the language packs and plugins!

For a complete list of improvements, fixes, and changes please check our release notes.

!!IMPORTANT!!

Requirements

In order to use Modern Authentication for emails, you must use the OAuth2 Plugin. Please note that this version requires PHP 8.0-8.2.

We have provided guides for setting up OAuth Authorization as well as OAuth Authentication on our documentation website.

Upgrading Your Testing Helpdesk

Note: Before upgrading osTicket, be sure to check your PHP version to make sure it is compatible. osTicket v1.17+ requires PHP 8.0-8.2.

Please be sure to upgrade your plugins as well as any language packs you have installed.

Note: You will need to download the OAuth2 Plugin in order to use modern authentication.

Maintenance Releases

For osTicket users who are unable or unwilling to upgrade, we highly recommend upgrading to the maintenance release, v1.17.4. These new maintenance releases address security vulnerabilities affecting prior releases. These fixes have also been integrated into v1.18.0.

Need help? – Contact us for professional support.

Latest Development

To keep up with future development in the works for osTicket, feel free to follow our osTicket Roadmap on GitHub.

Cheers,

The osTicket Team.

osTicket v1.16.6/v1.17.3 Available

Wed, 08 Mar 2023 21:36:28 +0000

osTicket v1.17.3 has been released and includes important fixes that you should make sure are added to your helpdesk. We have also updated the plugins!

For a complete list of improvements, fixes, and changes please check our release notes.

!!IMPORTANT!!

Microsoft and Google are phasing out Basic Authentication (username + password) for Modern Authentication (OAuth2). These changes will require setting up version 1.17+, upgrading to PHP 8.0-8.1, and installing the OAuth2 Plugin which will eliminate the need to store email passwords locally and will instead redirect you directly to the provider to login. Detailed guides for setting up the plugin can be found on our documentation website.

Requirements

In order to use Modern Authentication for emails, you must use the OAuth2 Plugin. Please note that this version requires PHP 8.0-8.1.

We have provided guides for setting up OAuth Authorization as well as OAuth Authentication on our documentation website.

Upgrading Your Testing Helpdesk

Note: Before upgrading osTicket, be sure to check your PHP version to make sure it is compatible. osTicket v1.17 requires PHP 8.0-8.1.

Please be sure to upgrade your plugins as well as any language packs you have installed.

Note: You will need to download the OAuth2 Plugin in order to use modern authentication.

Maintenance Releases

For osTicket users who are unable or unwilling to upgrade, we highly recommend upgrading to the 1.16.6 maintenance release, v1.16.6. These new maintenance releases address security vulnerabilities affecting prior releases. These fixes have also been integrated into v1.17.3.

Need help? – Contact us for professional support.

Latest Development

To keep up with future development in the works for osTicket, feel free to follow our osTicket Roadmap on GitHub.

Cheers,

The osTicket Team.

osTicket v1.16.5/v1.17.2 Available

Mon, 14 Nov 2022 22:01:46 +0000

osTicket v1.17.2 has been released and includes important fixes that you should make sure are added to your helpdesk!

For a complete list of improvements, fixes, and changes please check our release notes.

!!IMPORTANT!!

Microsoft and Google are phasing out Basic Authentication (username + password) for Modern Authentication (OAuth2). These changes will require setting up version 1.17+, upgrading to PHP 8.x, and installing the OAuth2 Plugin which will eliminate the need to store email passwords locally and will instead redirect you directly to the provider to login. Detailed guides for setting up the plugin can be found on our documentation website.

Requirements

In order to use Modern Authentication for emails, you must use the OAuth2 Plugin. Please note that this version requires PHP 8.x.

We have provided guides for setting up OAuth Authorization as well as OAuth Authentication on our documentation website.

Upgrading Your Testing Helpdesk

Note: Before upgrading osTicket, be sure to check your PHP version to make sure it is compatible. osTicket v1.17 requires PHP 8.x.

Please be sure to upgrade your plugins as well as any language packs you have installed.

Note: You will need to download the OAuth2 Plugin in order to use modern authentication.

Maintenance Releases

For osTicket users who are unable or unwilling to upgrade, we highly recommend upgrading to the 1.16.5 maintenance release, v1.16.5. These new maintenance releases address security vulnerabilities affecting prior releases. These fixes have also been integrated into v1.17.2.

Need help? – Contact us for professional support.

Latest Development

To keep up with future development in the works for osTicket, feel free to follow our osTicket Roadmap on GitHub.

Cheers,

The osTicket Team.

osTicket v1.17.1 Available

Tue, 08 Nov 2022 20:19:14 +0000

osTicket v1.17.1 has been released and includes important fixes that you should make sure are added to your helpdesk!

For a complete list of improvements, fixes, and changes please check our release notes.

!!IMPORTANT!!

Microsoft and Google are phasing out Basic Authentication (username + password) for Modern Authentication (OAuth2). These changes will require setting up version 1.17+, upgrading to PHP 8.x, and installing the OAuth2 Plugin which will eliminate the need to store email passwords locally and will instead redirect you directly to the provider to login. Detailed guides for setting up the plugin can be found on our documentation website.

Requirements

In order to use Modern Authentication for emails, you must use the OAuth2 Plugin. Please note that this version requires PHP 8.x.

We have provided guides for setting up OAuth Authorization as well as OAuth Authentication on our documentation website.

Upgrading Your Testing Helpdesk

Note: Before upgrading osTicket, be sure to check your PHP version to make sure it is compatible. osTicket v1.17 requires PHP 8.x.

Please be sure to upgrade your plugins as well as any language packs you have installed.

Note: You will need to download the OAuth2 Plugin in order to use modern authentication.

Maintenance Releases

For osTicket users who are unable or unwilling to upgrade, we highly recommend upgrading to the 1.16.4 maintenance release, v1.16.4. These new maintenance releases address security vulnerabilities affecting prior releases. These fixes have also been integrated into v1.17.1.

Need help? – Contact us for professional support.

Latest Development

To keep up with future development in the works for osTicket, feel free to follow our osTicket Roadmap on GitHub.

Cheers,

The osTicket Team.

osTicket v1.17 Available

Thu, 29 Sep 2022 13:22:28 +0000

We have officially released the first stable version of osTicket v1.17! This version of osTicket includes important features that may need to be set up in order to ensure emails in your helpdesk continue to work properly.

!!IMPORTANT!!

Microsoft and Google are phasing out Basic Authentication (username + password) for Modern Authentication (OAuth2). These changes will require setting up version 1.17+, upgrading to PHP 8.x, and installing the OAuth2 Plugin which will eliminate the need to store the password locally and will instead redirect you directly to the provider to login. Detailed guides for setting up the plugin can be found on our documentation website.

If your helpdesk is using the ‘Attachments in Amazon S3‘ plugin, you will need to download the latest plugin and resave your credentials.

Requirements

In order to use Modern Authentication for emails, you must use the OAuth2 Plugin. Please note that this version requires PHP 8.0.x.

We have provided guides for setting up OAuth Authorization as well as OAuth Authentication on our documentation website. We will soon have a video tutorial for setting up OAuth, so be on the lookout. We have focused our testing on using OAuth with Outlook and Gmail.

Upgrading Your Testing Helpdesk

Note: Before upgrading osTicket, be sure to check your PHP version to make sure it is compatible. osTicket v1.17 requires PHP 8.x.

Please be sure to upgrade your plugins as well as any language packs you have installed.

Note: You will need to download the OAuth2 Plugin in order to use modern authentication.

Latest Development

To keep up with future development in the works for osTicket, feel free to follow our osTicket Roadmap on GitHub.

Cheers,

The osTicket Team.

osTicket v1.17 RC4 Available

Thu, 08 Sep 2022 17:24:13 +0000

We have officially released osTicket v1.17 RC4. We are in the last stages of perfecting v1.17.

!!IMPORTANT!!

This is a release candidate, and it should not be used in production. It should only be used for testing purposes.

Requirements

In order to test external authorization, you must use the OAuth2 Plugin. Please note that this release candidate requires PHP 8.0.x and should only be used for testing OAuth functionality.

Be on the lookout for documentation as well as a tutorial on how to set everything up. We have focused our testing on using OAuth with Outlook and Gmail.

Upgrading Your Testing Helpdesk

Note: Before upgrading osTicket, be sure to check your PHP version to make sure it is compatible. osTicket v1.17 RC4 requires PHP 8.x.

Please be sure to upgrade your plugins as well as any language packs you have installed.

Note: You will need to download the OAuth2 Plugin in order to test external authorization.

Latest Development

To keep up with future development in the works for osTicket, feel free to follow our osTicket Roadmap on GitHub.

Cheers,

The osTicket Team.

osTicket v1.17 RC3 Available

Fri, 05 Aug 2022 12:53:15 +0000

We’re continuing down the path to perfect OAuth support! Today we have released osTicket v1.17 RC3.

!!IMPORTANT!!

This is a release candidate, and it should not be used in production. It should only be used for testing purposes.

Requirements

In order to test external authorization, you must use the OAuth2 Plugin. Please note that this release candidate requires PHP 8.0.x and should only be used for testing OAuth functionality.

Be on the lookout for documentation as well as a tutorial on how to set everything up. We have focused our testing on using OAuth with Outlook and Gmail.

Upgrading Your Testing Helpdesk

Note: Before upgrading osTicket, be sure to check your PHP version to make sure it is compatible. osTicket v1.17 RC1 requires PHP 8.0.x.

Please be sure to upgrade your plugins as well as any language packs you have installed.

Note: You will need to download the OAuth2 Plugin in order to test external authorization.

If maintaining your osTicket installation is becoming daunting, we would encourage you to consider osTicket as a hosted service – we’ll even import data from your current installation, free of charge. With SupportSystem’s turnkey infrastructure, you get osTicket at its best, leaving you free to focus on your customers without the burden of making sure the application is stable, maintained, and secure.

Latest Development

To keep up with future development in the works for osTicket, feel free to follow our osTicket Roadmap on GitHub.

Cheers,

The osTicket Team.