# Announcements **URL:** https://community.thinlinc.com/c/announcements/5.md [Latest](https://community.thinlinc.com/latest.md) · [Categories](https://community.thinlinc.com/categories.md) · [Tags](https://community.thinlinc.com/tags.md) --- ## [About the Announcements category](https://community.thinlinc.com/t/about-the-announcements-category/16)
**Author:** [@cendio](https://community.thinlinc.com/u/cendio)\ **Replies:** 0
A low-volume category for important announcements regarding ThinLinc, including new releases and security notifications. If you are a ThinLinc user, you should subscribe to this category. --- ## [ThinLinc 4.21.0 released](https://community.thinlinc.com/t/thinlinc-4-21-0-released/2069)
**Author:** [@samuel](https://community.thinlinc.com/u/samuel)\ **Replies:** 0\ **Last updated:** [21 August 2026 14:14 UTC](https://community.thinlinc.com/t/thinlinc-4-21-0-released/2069 "2026-08-21T14:14:20Z")
Cendio are proud to present ThinLinc 4.21.0, with more than 100 enhancements and fixes. The most prominent changes are: ThinLinc Web Access now supports the OpenID Connect authentication protocol. This enables organiz… --- ## [ThinLinc 4.15.1 through 4.20.1 security release](https://community.thinlinc.com/t/thinlinc-4-15-1-through-4-20-1-security-release/1985)
**Author:** [@CendioOssman](https://community.thinlinc.com/u/CendioOssman)\ **Replies:** 1\ **Last updated:** [23 April 2026 05:32 UTC](https://community.thinlinc.com/t/thinlinc-4-15-1-through-4-20-1-security-release/1985 "2026-04-23T05:32:16Z")
A security release is now available that fixes a critical security issue in ThinLinc’s browser-based web client, Web Access. This release is available for all supported versions of ThinLinc, meaning ThinLinc 4.15.0 throu… --- ## [Urgent: ThinLinc security issue](https://community.thinlinc.com/t/urgent-thinlinc-security-issue/1970)
**Author:** [@CendioOssman](https://community.thinlinc.com/u/CendioOssman)\ **Replies:** 1\ **Last updated:** [9 April 2026 14:26 UTC](https://community.thinlinc.com/t/urgent-thinlinc-security-issue/1970 "2026-04-09T14:26:58Z")
Release with fixes are now available: Click here A critical security issue has been discovered in the ThinLinc server that allows any user to impersonate any other user, including the root user. This issue affects all… --- ## [ThinLinc 4.20.0 released](https://community.thinlinc.com/t/thinlinc-4-20-0-released/1836)
**Author:** [@samuel](https://community.thinlinc.com/u/samuel)\ **Replies:** 0\ **Last updated:** [9 January 2026 13:49 UTC](https://community.thinlinc.com/t/thinlinc-4-20-0-released/1836 "2026-01-09T13:49:49Z")
Cendio are proud to present ThinLinc 4.20.0, with more than 100 enhancements and fixes. The most prominent changes are: ThinLinc’s web-based services, Web Access and web administration, have both been overhauled to ma… --- ## [ThinLinc 4.19.0 released](https://community.thinlinc.com/t/thinlinc-4-19-0-released/1662)
**Author:** [@samuel](https://community.thinlinc.com/u/samuel)\ **Replies:** 0\ **Last updated:** [8 July 2025 13:52 UTC](https://community.thinlinc.com/t/thinlinc-4-19-0-released/1662 "2025-07-08T13:52:11Z")
Cendio are proud to present ThinLinc 4.19.0, with more than 110 enhancements and fixes. The most prominent changes are: The load balancer has been replaced and is now based on the principle of keeping the same number … --- ## [ThinLinc 4.19.0 will drop support for RHEL 7, Debian 9, Ubuntu 18.04, and SLES 12](https://community.thinlinc.com/t/thinlinc-4-19-0-will-drop-support-for-rhel-7-debian-9-ubuntu-18-04-and-sles-12/1498)
**Author:** [@wilsj](https://community.thinlinc.com/u/wilsj)\ **Replies:** 0\ **Last updated:** [1 April 2025 13:53 UTC](https://community.thinlinc.com/t/thinlinc-4-19-0-will-drop-support-for-rhel-7-debian-9-ubuntu-18-04-and-sles-12/1498 "2025-04-01T13:53:35Z")
In the upcoming ThinLinc 4.19.0, scheduled for release this summer, both the server and Linux client will have increased operating system requirements¹. In practice, this means that ThinLinc will no longer work on severa… --- ## [ThinLinc 4.18.0 released](https://community.thinlinc.com/t/thinlinc-4-18-0-released/1250)
**Author:** [@samuel](https://community.thinlinc.com/u/samuel)\ **Replies:** 0\ **Last updated:** [21 December 2024 10:33 UTC](https://community.thinlinc.com/t/thinlinc-4-18-0-released/1250 "2024-12-21T10:33:34Z")
Cendio are proud to present ThinLinc 4.18.0, with more than 40 enhancements and fixes. The most prominent changes are: It is now possible to limit the maximum number of users per agent. This can be used in scenarios w… --- ## [ThinLinc 4.17.0 released](https://community.thinlinc.com/t/thinlinc-4-17-0-released/1001)
**Author:** [@adaha](https://community.thinlinc.com/u/adaha)\ **Replies:** 0\ **Last updated:** [10 July 2024 13:02 UTC](https://community.thinlinc.com/t/thinlinc-4-17-0-released/1001 "2024-07-10T13:02:58Z")
Cendio are proud to present ThinLinc 4.17.0, with more than 20 enhancements and fixes. The most prominent changes are: Tab-completion has been added to our tools. This allows admins and users to more easily explore av… --- ## [ThinLinc 4.16.0 released](https://community.thinlinc.com/t/thinlinc-4-16-0-released/835)
**Author:** [@samuel](https://community.thinlinc.com/u/samuel)\ **Replies:** 0\ **Last updated:** [30 January 2024 15:17 UTC](https://community.thinlinc.com/t/thinlinc-4-16-0-released/835 "2024-01-30T15:17:01Z")
Cendio are proud to present ThinLinc 4.16.0, with more than 30 enhancements and fixes. The most prominent changes are: The ThinLinc server has been reworked to be compatible with changes in modern Python versions, for… --- ## [ThinLinc 4.15.0 released](https://community.thinlinc.com/t/thinlinc-4-15-0-released/685)
**Author:** [@CendioOssman](https://community.thinlinc.com/u/CendioOssman)\ **Replies:** 0\ **Last updated:** [24 August 2023 13:32 UTC](https://community.thinlinc.com/t/thinlinc-4-15-0-released/685 "2023-08-24T13:32:12Z")
Cendio are proud to present ThinLinc 4.15.0, with more than 140 enhancements and fixes. The most prominent changes are: Managing a ThinLinc cluster from the command line has been made easier in various ways, primarily… --- ## [OpenSSL 3 vulnerability CVE-2022-3602](https://community.thinlinc.com/t/openssl-3-vulnerability-cve-2022-3602/476)
**Author:** [@CendioOssman](https://community.thinlinc.com/u/CendioOssman)\ **Replies:** 0\ **Last updated:** [1 November 2022 17:02 UTC](https://community.thinlinc.com/t/openssl-3-vulnerability-cve-2022-3602/476 "2022-11-01T17:02:49Z")
Most of you have probably heard of the new OpenSSL vulnerability that was made public today, and might be wondering how it affects your usage of ThinLinc. Fortunately, it doesn’t affect ThinLinc at all. The security iss… --- ## [ThinLinc 4.14.0 Released](https://community.thinlinc.com/t/thinlinc-4-14-0-released/306)
**Author:** [@aaron](https://community.thinlinc.com/u/aaron)\ **Replies:** 0\ **Last updated:** [7 February 2022 20:34 UTC](https://community.thinlinc.com/t/thinlinc-4-14-0-released/306 "2022-02-07T20:34:10Z")
Cendio are proud to present ThinLinc 4.14.0, with more than 60 enhancements and fixes. The most prominent changes are: The native client now supports full-screen mode over an arbitrary set of monitors. This can be u… --- ## [Log4Shell Vulnerability](https://community.thinlinc.com/t/log4shell-vulnerability/286)
**Author:** [@aaron](https://community.thinlinc.com/u/aaron)\ **Replies:** 0\ **Last updated:** [14 December 2021 22:03 UTC](https://community.thinlinc.com/t/log4shell-vulnerability/286 "2021-12-14T22:03:12Z")
We have had several queries over the past few days regarding the recently disclosed “Log4Shell” vulnerability (CVE-2021-4104). As ThinLinc does not contain Java at all, the product is unaffected by this vulnerability. --- ## [ThinLinc 4.13.0](https://community.thinlinc.com/t/thinlinc-4-13-0/228)
**Author:** [@samuel](https://community.thinlinc.com/u/samuel)\ **Replies:** 2\ **Last updated:** [7 September 2021 13:03 UTC](https://community.thinlinc.com/t/thinlinc-4-13-0/228 "2021-09-07T13:03:18Z")
Cendio are proud to present ThinLinc 4.13.0, with more than 120 enhancements and fixes. The most prominent changes are: The ThinLinc server has been updated to use Python 3 and GTK+ 3 in order to be more compatible wi… --- ## [ThinLinc 4.12.1](https://community.thinlinc.com/t/thinlinc-4-12-1/110)
**Author:** [@samuel](https://community.thinlinc.com/u/samuel)\ **Replies:** 0\ **Last updated:** [5 February 2021 11:36 UTC](https://community.thinlinc.com/t/thinlinc-4-12-1/110 "2021-02-05T11:36:11Z")
Cendio are proud to present ThinLinc 4.12.1, which is a minor release with bug fixes for the previous version. All existing users of ThinLinc 4.12.0 are encouraged to upgrade to this release immediately. License files …