diff --git a/LICENSE b/LICENSE
index d6f40ac882f3f2dd325dc20e7f7a1589621ed55e..e134aa41a38b0e7e427afeca0ab730ac4232f9d3 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,7 +1,7 @@
The code of Project Gluon may be distributed under the following terms, unless
noted otherwise in individual files or subtrees.
-Copyright (c) 2013-2021, Project Gluon
+Copyright (c) 2013-2022, Project Gluon
All rights reserved.
Redistribution and use in source and binary forms, with or without
diff --git a/README.md b/README.md
index 647f0e5820af9026f9f3189de4aa44903e78d534..17bdb2772bb663b7c31d86f56539f6f9837860e3 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ the future development of Gluon.
Please refrain from using the `master` branch for anything else but development purposes!
Use the most recent release instead. You can list all releases by running `git tag`
-and switch to one by running `git checkout v2021.1 && make update`.
+and switch to one by running `git checkout v2021.1.2 && make update`.
If you're using the autoupdater, do not autoupdate nodes with anything but releases.
If you upgrade using random master commits the nodes *might break* eventually.
diff --git a/docs/conf.py b/docs/conf.py
index ea923d9282505045708e0fb8ed0b7deed07b1b88..f37058cc8bffb552dae6096581ee5eee9d0faa85 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -20,7 +20,7 @@
# -- Project information -----------------------------------------------------
project = 'Gluon'
-copyright = '2015-2021, Project Gluon'
+copyright = '2015-2022, Project Gluon'
author = 'Project Gluon'
# The short X.Y version
diff --git a/docs/releases/index.rst b/docs/releases/index.rst
index ddda8511515ed0c24513cbb0e895dbb76a378bfb..d1142e2b6c7885f866e77a8f9f96ba61be9aada4 100644
--- a/docs/releases/index.rst
+++ b/docs/releases/index.rst
@@ -5,6 +5,7 @@ Release Notes
:caption: Gluon 2021.1
:maxdepth: 2
+ v2021.1.2
v2021.1.1
v2021.1
diff --git a/docs/releases/v2021.1.2.rst b/docs/releases/v2021.1.2.rst
new file mode 100644
index 0000000000000000000000000000000000000000..70667555fc90edfd315c31aeb9c4a33c76fee50a
--- /dev/null
+++ b/docs/releases/v2021.1.2.rst
@@ -0,0 +1,131 @@
+Gluon 2021.1.2
+==============
+
+Important notes
+---------------
+
+This release fixes a **critical security vulnerability** in Gluon's
+autoupdater.
+
+Upgrades to v2021.1 and later releases are only supported from releases v2018.2
+and later. Migration code for upgrades from older versions has been removed to
+simplify maintenance.
+
+
+Updates
+-------
+
+- The Linux kernel was updated to version 4.14.275
+- The mac80211 wireless driver stack was updated to a version based on kernel
+ 4.19.237
+
+Various minor package updates are not listed here and can be found in the commit
+log.
+
+
+Bugfixes
+--------
+
+* **[SECURITY]** Autoupdater: Fix signature verification
+
+ A recently discovered issue (CVE-2022-24884) in the *ecdsautils* package
+ allows forgery of cryptographic signatures. This vulnerability can be
+ exploited to create a manifest accepted by the autoupdater without knowledge
+ of the signers' private keys. By intercepting nodes' connections to the update
+ server, such a manifest allows to distribute malicious firmware updates.
+
+ This is a **critical** vulnerability. All nodes with autoupdater must be
+ updated. Requiring multiple signatures for an update does *not* mitigate the
+ issue.
+
+ As a temporary workaround, the issue can be mitigated on individual nodes by
+ disabling the autoupdater via config mode or using the following commands::
+
+ uci set autoupdater.settings.enabled=0
+ uci commit autoupdater
+
+ A fixed firmware should be installed manually before enabling the autoupdater
+ again.
+
+ See security advisory `GHSA-qhcg-9ffp-78pw
+ <https://github.com/freifunk-gluon/ecdsautils/security/advisories/GHSA-qhcg-9ffp-78pw>`_
+ for further information on this vulnerability.
+
+* **[SECURITY]** Config Mode: Prevent Cross-Site Request Forgery (CSRF)
+
+ The Config Mode was not validating the *Origin* header of POST requests.
+ This allowed arbitrary websites to modify configuration (including SSH keys)
+ on a Gluon node in Config Mode reachable from a user's browser by sending POST
+ requests with form data to 192.168.1.1.
+
+ The impact of this issue is considered low, as nodes are only vulnerable while
+ in Config Mode.
+
+* Config Mode: Fix occasionally hanging page load after submitting the
+ configuration wizard causing the reboot message and VPN key not to be
+ displayed
+
+* Config Mode (OSM): Update default OpenLayers source URL
+
+ The OSM feature of the Config Mode was broken when the default source URL was
+ used for OpenLayers, as the old URL has become unavailable. The default was
+ updated to a URL that should not become unavailable again.
+
+* Config Mode (OSM): Fix error when using ``"`` character in attribution text
+
+* respondd-module-airtime: Fix respondd crash on devices with disabled WLAN
+ interfaces
+
+ Several improvements were made to the error handling of the
+ *respondd-module-airtime* package. The "PHY ID" field (introduced in Gluon
+ 2021.1) was removed again.
+
+* ipq40xx: Fix bad WLAN performance on Plasma Cloud PA1200 and PA2200 devices
+
+* Fix occasional build failure in "perl" package with high number of threads
+ (``-j32`` or higher)
+
+
+Other improvements
+------------------
+
+* Several improvements were made to the status page:
+
+ - WLAN channel display does not require the *respondd-module-airtime* package
+ anymore
+ - The "gateway nexthop" label now links to the status page of the nexthop node
+ - The timeout to retrieve information from neighbour nodes was increased,
+ making the display of the name
+ of overloaded, slow or otherwise badly reachable nodes more likely to
+ succeed
+
+
+Known issues
+------------
+
+* Upgrading EdgeRouter-X from versions before v2020.1.x may lead to a
+ soft-bricked state due to bad blocks on the NAND flash which the NAND driver
+ before this release does not handle well.
+ (`#1937 <https://github.com/freifunk-gluon/gluon/issues/1937>`_)
+
+* The integration of the BATMAN_V routing algorithm is incomplete.
+
+ - Mesh neighbors don't appear on the status page.
+ (`#1726 <https://github.com/freifunk-gluon/gluon/issues/1726>`_)
+ Many tools have the BATMAN_IV metric hardcoded, these need to be updated to
+ account for the new throughput metric.
+ - Throughput values are not correctly acquired for different interface types.
+ (`#1728 <https://github.com/freifunk-gluon/gluon/issues/1728>`_)
+ This affects virtual interface types like bridges and VXLAN.
+
+* Default TX power on many Ubiquiti devices is too high, correct offsets are
+ unknown (`#94 <https://github.com/freifunk-gluon/gluon/issues/94>`_)
+
+ Reducing the TX power in the Advanced Settings is recommended.
+
+* In configurations without VXLAN, the MAC address of the WAN interface is
+ modified even when Mesh-on-WAN is disabled
+ (`#496 <https://github.com/freifunk-gluon/gluon/issues/496>`_)
+
+ This may lead to issues in environments where a fixed MAC address is expected
+ (like VMware when promiscuous mode is disallowed).