Cluster autoscaler add-on version change log

Patch updates: Patch updates are delivered automatically by IBM and don't contain any feature updates or changes in the supported add-on and cluster versions.
Release updates: Release updates contain new features or changes in the supported add-on or cluster versions. You must manually apply release updates to your cluster autoscaler add-on.

To view a list of add-ons and the supported cluster versions, run the following command or see the Supported cluster add-ons table.

ibmcloud oc cluster addon versions

Review the version history for Cluster autoscaler.

Version 2.0.0

Version 2.0.0 - v200-12-0_351296784, released 07 July 2026

Resolves the following CVEs: CVE-2026-42507.
Updates Go to version 1.25.11.
Update storage secret sidecar 1.3.56
1.30.7 200-12
1.31.5 200-12
1.32.7 200-12
1.33.4 200-12
1.34.4 200-12
1.35.0 200-12

Version 2.0.0 - v200-7-0_332133224, released 30 April 2026

Update storage secret sidecar 1.3.44
1.30.7 200-7
1.31.5 200-7
1.32.7 200-7
1.33.4 200-7
1.34.4 200-7
1.35.0 200-7

Version 2.0.0 - v200-6-0_326846817, released 24 March 2026

Update storage secret sidecar 1.3.43
Fix issue where scale down to 0 was not working in CA 1.34
1.30.7 200-6
1.31.5 200-6
1.32.5 200-6
1.33.3 200-6
1.34.2 200-6.

Version 2.0.0 - v200-4_316755565, released 18 February 2026

Resolves the following CVEs: CVE-2025-13281.
Update storage secret sidecar v1.3.40
1.30.7 200-4
1.31.5 200-4
1.32.5 200-4
1.33.3 200-4
1.34.2 200-4.

Version patch update 2.0.0-2_302959219, released 2 December 2025

Adds support for scale down to 0.
Adds support for cluster version 1.34.
Updates base golang version to 1.25.4.
Updates storage secret sidecar 1.3.37.
Image tags: 1.30.7-v200-2, 1.31.5-v200-2, 1.32.4-v200-2, 1.33.2-v200-2, 1.34.1-v200-2.

Version 1.2.4

Version 1.2.4 - v124-13-0_351834855, released 07 July 2026

Resolves the following CVEs: CVE-2026-27145, and CVE-2026-42507.
Updates Go to version 1.25.11.
Update storage secret sidecar 1.3.56
1.28.7 124-13
1.29.5 124-13
1.30.7 124-13
1.31.5 124-13
1.32.7 124-13
1.33.4 124-13
1.34.3 124-13.

Version 1.2.4 - v124-8-0_326847250, released 24 March 2026

Update storage secret sidecar 1.3.43
1.28.7 124-8
1.29.5 124-8
1.30.7 124-8
1.31.5 124-8
1.32.5 124-8
1.33.3 124-8
1.34.2 124-8.

Version 1.2.4 - v124-7_312863411, released 16 February 2026

Resolves the following CVEs: CVE-2025-4563, CVE-2025-5187, CVE-2025-13281, CVE-2025-30204, and CVE-2025-22872.
Updates Go to version 1.25.4.
Update storage secret sidecar v1.3.39
Adds support for cluster version 1.34.
1.34 has functionality to cordon node before terminating via the --cordon-node-before-terminating flag.
1.28.7 124-7
1.29.5 124-7
1.30.7 124-7
1.31.5 124-7
1.32.5 124-7
1.33.3 124-7
1.34.2 124-7.

Version patch update 1.2.4_680, released 18 July 2025.

Resolves the following CVEs: CVE-2025-3576, CVE-2025-4673, CVE-2025-4802.
Updates Go to 1.23.10
Updates the storage-secret-sidecar image to v1.3.30
Image tags: 1.28.7 124-1, 1.29.5 124-1, 1.30.4 124-1, 1.31.1 124-1, 1.32.1 124-1.

Version patch update 1.2.4_629, released 22 April 2025.

Adds support for version 1.32
Updates golang version to 1.23.7
Updates the storage-secret-sidecar image to v1.3.26
Updates open source source cluster autoscaler code to latest versions for: 1.28.7, 1.29.5, 1.30.4, 1.31.2, 1.32.1.
Image tags: 1.28.7 124-0, 1.29.5 124-0, 1.30.4 124-0, 1.31.1 124-0, 1.32.1 124-0.

Beginning in version 1.2.4 the maxEmptyBulkDelete option is no longer supported. Remove this option from your configmap by running kubectl edit configmap iks-ca-configmap -n kube-system command and deleting the option. As a replacement, you can use the maxScaleDownParallelism option which was added in version 1.2.4. For more information, see the configmap reference.

Change log for patch update 1.2.4_793, released 18th September 2025

Adds support for cluster version 1.33.
Updates Golang version to 1.24.0.
Updates storage secret sidecar 1.3.32.
Resolves the following CVEs: CVE-2025-4563.
The --max-empty-bulk-delete option is no longer supported. Instead, use the --max-scale-down-parallelism option.
Adds GPU support with the --scale-down-gpu-utilization-threshold option for Nvidia vendors.
Image tags: 1.28.7 124-4, 1.29.5 124-4, 1.30.5 124-4, 1.31.3 124-4, 1.32.2 124-4, 1.33.0 124-4.

Version 1.2.3

Version patch update 1.2.3_716, released 25 July 2025.

Resolves the following CVEs: CVE-2025-3576, CVE-2025-4673, CVE-2025-4802, CVE-2025-0426, CVE-2024-9042, CVE-2025-0426, CVE-2024-9042.
Updates Go to 1.23.10.
Updates storage secret sidecar to 1.3.30.
Image tags: 1.28.7 123-3, 1.29.5 123-3, 1.30.4 123-3, 1.31.2 123-3.

Version patch update 1.2.3_540, released 10 March 2025

Updates golang version to 1.22.11 for cluster version 1.28, 1.29, 1.30, and 1.31.
Updates the storage-secret-sidecar image to v1.3.23.
Updates source code to version 1.28.7, 1.29.5, 1.30.3, and 1.31.1.
Image tags: 1.27.3 123-1, 1.28.7 123-2, 1.29.5 123-2, 1.30.3 123-2, 1.31.1 123-2.
Resolves CVE-2024-24789, CVE-2024-24790, CVE-2024-34158, CVE-2024-34155, CVE-2024-34156, and CVE-2024-43040.

Version patch update 1.2.3_512, released 31 October 2024

Adds support for version 1.31.
Updates the storage-secret-sidecar image to v1.3.16.
Image tags: 1.27.3 123-1, 1.28.0 123-1, 1.29.0 123-1, 1.30.2 123-1, 1.31.0 123-1

Version 1.2.2

Version patch update 1.2.2_466, released 15 July 2024

Updates the storage-secret-sidecar image to v1.3.10.
Resolves CVE-2024-28182 and CVE-2023-2953
Image tags: 1.24.0-122-0, 1.25.0-122-0, 1.26.4-122-0, 1.27.3-122-0, 1.28.0-122-0, 1.29.0-122-0.

Version patch update 1.2.2_452, released 20 June 2024

Adds support for version 1.30.
Changes the format of the cluster-autoscaler-status configmap. For more information, see the Community Kubernetes pull request.
Image tags: 1.22.0-122-0, 1.23.0-122-0, 1.24.0-122-0, 1.25.0-122-0, 1.26.4-122-0, 1.27.3-122-0, 1.28.0-122-0, 1.29.0-122-0, 1.30.0-122-0.

Version 1.2.1

Version patch update 1.2.1_467, released 15 July 2024

Updates the storage-secret-sidecar image to v1.3.10.
Resolves CVE-2024-28182 and CVE-2023-2953
Image tags: 1.24.0-121-2, 1.25.0-121-2, 1.26.4-121-2, 1.27.3-121-2, 1.28.0-121-2, 1.29.0-121-2.

Version patch update 1.2.1_444, released 21 June 2024

Updates the storage-secret-sidecar image to v1.3.9.
Updates golang version to 1.21.11.
Image tags: 1.24.0-121-2, 1.25.0-121-2, 1.26.4-121-2, 1.27.3-121-2, 1.28.0-121-2, 1.29.0-121-2.

Version patch update 1.2.1_425, released 05 May 2024

Updates the storage-secret-sidecar image to v1.3.7
Fixes a utilization calculation bug during scale down.
Image tags: 1.22.0-121-1, 1.23.0-121-1, 1.24.0-121-1, 1.25.0-121-1, 1.26.4-121-1, 1.27.3-121-1, 1.28.0-121-1, and 1.28.0-121-1.

Version patch update 1.2.1_418, released 02 April 2024

Updates the storage-secret-sidecar image to v1.3.6
Adds support for drainPriorityConfig, dynamicNodeDeleteDelayAfterTaintEnabled, loggingFormat, emitPerNodegroupMetrics, kubeApiContentType, featureGates parameters.
Image tags: 1.22.0-121-0, 1.23.0-121-0, 1.24.0-121-0, 1.25.0-121-0, 1.26.4-121-0, 1.27.3-121-0, 1.28.0-121-0.

Version patch update 1.2.1_395, released 28 February 2024

Adds support for cluster version 1.29.
Image tags: 1.22.0-121-0, 1.23.0-121-0, 1.24.0-121-0, 1.25.0-121-0, 1.26.4-121-0, 1.27.3-121-0, 1.28.0-121-0.

Version 1.2.0

Version patch update 1.2.0_468, released 15 July 2024

Updates the storage-secret-sidecar image to v1.3.10.
Resolves CVE-2024-28182 and CVE-2023-2953
Image tags: 1.24.0-120-6, 1.25.0-120-6, 1.26.4-120-6, 1.27.3-120-6, 1.28.0-120-6.

Version patch update 1.2.0_443, released 21 June 2024

Updates the storage-secret-sidecar image to v1.3.9.
Updates golang version to 1.21.11.
Image tags: 1.24.0-120-6, 1.25.0-120-6, 1.26.4-120-6, 1.27.3-120-6, 1.28.0-120-6.

Version patch update 1.2.0_426, released 05 May 2024

Updates the storage-secret-sidecar image to v1.3.7
Fixes a utilization calculation bug during scale down.
Image tags: 1.22.0-120-5, 1.23.0-120-5, 1.24.0-120-5, 1.25.0-120-5, 1.26.4-120-5, 1.27.3-120-5, and 1.28.0-120-5.

Version patch update 1.2.0_410, released 02 April 2024

Updates the storage-secret-sidecar image to v1.3.6
Images tags: 1.22.0-120-4, 1.23.0-120-4, 1.24.0-120-4, 1.25.0-120-4, 1.26.4-120-4, 1.27.3-120-4, 1.28.0-120-4.

Version patch update 1.2.0_365, released 21 February 2024

Updated the storage-secret-sidecar image to v1.3.5.
Image tags: 1.22.0-120-4, 1.23.0-120-4, 1.24.0-120-4, 1.25.0-120-4, 1.26.4-120-4, 1.27.3-120-4, and 1.28.0-120-4.

Version patch update 1.2.0_322, released 16 January 2024

Fixes CVE-2007-4559, CVE-2023-22745, CVE-2023-4641
Updated the storage-secret-sidecar image to v1.3.4
Fixes an issue while updating custom variables via add-on.
Adds support for the maxPodEvictionTime parameter.
Image tags: 1.22.0-120-3, 1.23.0-120-3, 1.24.0-120-3, 1.25.0-120-3, 1.26.4-120-3, 1.27.3-120-3, and 1.28.0-120-3.

Version patch update 1.2.0_290, released 27 November 2023

Fixes CVE-2007-4559, CVE-2023-22745, and CVE-2023-4641.
Updated the storage-secret-sidecar image to v1.3.3.
Image tags: 1.22.0-120-2, 1.23.0-120-2, 1.24.0-120-2, 1.25.0-120-2, 1.26.4-120-2, 1.27.3-120-2, and 1.28.0-120-2.

Version patch update 1.2.0_228, released 15 November 2023

Adds support for cluster version 1.28
Image tags: 1.22.0-120-2, 1.23.0-120-2, 1.24.0-120-2, 1.25.0-120-2, 1.26.4-120-2, 1.27.3-120-2, and 1.28.0-120-2.

Version 1.0.9

Version patch update 1.0.9_411, released 02 April 2024

Updates the storage-secret-sidecar image to v1.2.33
Images tags: 1.22.0-109-3, 1.23.0-109-3, 1.24.0-109-3, 1.25.0-109-3, 1.26.1-109-3, 1.27.2-109-3.

Version patch update 1.0.9_377, released 21 February 2024

Updated the storage-secret-sidecar image to v1.2.31.
Fixed naming issues with the nodeDeleteDelayAfterTaint and maxNodesTotal parameters.
Image tags: 1.22.0-109-3, 1.23.0-109-3, 1.24.0-109-3, 1.25.0-109-3, 1.26.1-109-3, 1.27.2-109-3.

Version patch update 1.0.9_328, released 16 January 2024

Fixes CVE-2007-4559, CVE-2023-22745, CVE-2023-4641
Updates the storage-secret-sidecar image to v1.2.30.
Fixes an issue while updating custom variables via add-on.

Version patch update 1.0.9_290, released 27 November 2023

Fixes CVE-2007-4559, CVE-2023-22745, and CVE-2023-4641.
Updated the storage-secret-sidecar image to v1.2.29.
Image tags: 1.22.0-109-2, 1.23.0-109-2, 1.24.0-109-2, 1.25.0-109-2, 1.26.1-109-2, 1.27.2-109-2.

Version patch update 1.0.9_195, released 13 November 2023

Updates the storage-secret-sidecar image to v1.2.28.
Updates Golang to 1.20.10.
Image tags: 1.22.0-109-2, 1.23.0-109-2, 1.24.0-109-2, 1.25.0-109-2, 1.26.1-109-2, 1.27.2-109-2.

Version patch update 1.0.9_134, released 04 October 2023

Adds constraints to allow add-on deployment on amd64 architecture only.
Image tags: 1.22.0-109-1, 1.23.0-109-1, 1.24.0-109-1, 1.25.0-109-1, 1.26.1-109-1, 1.27.2-109-1.

Version patch update 1.0.9_103, released 15 September 2023

Image tags: 1.22.0-109-3, 1.23.0-109-3, 1.24.0-109-3, 1.25.0-109-3, 1.26.1-109-3, 1.27.2-109-3.
Updated the storage-secret-sidecar image to v1.2.26.
Golang update to resolve CVE-2023-29409.

Version patch update 1.0.9_81, released 07 August 2023

Image tags: 1.22.0-109-0, 1.23.0-109-0, 1.24.0-109-0, 1.25.0-109-0,1.26.1-109-0,1.27.2-109-0.
Updates the storage-secret-sidecar image to v1.2.25.
Resolves the followings CVEs:CVE-2023-2283,CVE-2023-26604, CVE-2020-24736, and CVE-2023-1667.

Version patch update 1.0.9_70, released 24 July 2023

Adds support for the prometheusScrape annotation.
Image tags: 1.22.0-109-0, 1.23.0-109-0, 1.24.0-109-0, 1.25.0-109-0, 1.26.1-109-0, 1.27.2-109-0.

Version patch update 1.1.0_362, released 16 February 2024

Image tags: 1.21.0 110-10, 1.22.0 110-10, 1.23.0 110-10, 1.24.0 110-10, 1.25.0 110-10.
Updates golang version to 1.20.11.

Version patch update 1.0.8_292, released 27 November 2023

Fixes CVE-2007-4559, CVE-2023-22745, and CVE-2023-4641.
Updated the storage-secret-sidecar image to v1.2.29.
Image tags: 1.20.0 108-5, 1.21.0 108-5, 1.22.0 108-5, 1.23.0 108-5, 1.24.0 108-5, 1.25.0 108-5, and 1.26.0 108-5.

Version patch update 1.0.8_233, released 13 November 2023

Updates the storage-secret-sidecar image to v1.2.28.
Updates Golang to 1.20.10.
Image tags: 1.20.0 108-5, 1.21.0 108-5, 1.22.0 108-5, 1.23.0 108-5, 1.24.0 108-5, 1.25.0 108-5, and 1.26.0 108-5.

Version patch update 1.0.8_104, released 15 September 2023

Image tags: 1.22.0-108-4, 1.23.0-109-4, 1.24.0-108-4, 1.25.0-108-4, 1.26.1-108-4, 1.27.2-109-4.
Updated the storage-secret-sidecar image to v1.2.26.
Golang update to resolve CVE-2023-29409.

Version patch update 1.0.8_82, released 7 August 2023

Image tags: 1.20.0 108-3, 1.21.0 108-3, 1.22.0 108-3, 1.23.0 108-3, 1.24.0 108-3, 1.25.0 108-3, 1.26.0 108-3.
Updates the storage-secret-sidecar image to v1.2.25.
Resolves the followings CVEs:CVE-2023-2283,CVE-2023-26604, CVE-2020-24736, and CVE-2023-1667.

Version patch update 1.0.7_291, released 27 November 2023

Fixes CVE-2007-4559, CVE-2023-22745, and CVE-2023-4641.
Updated the storage-secret-sidecar image to v1.2.29.
Image tags: 1.20.0 107-7, 1.21.0 107-7, 1.22.0 107-7, 1.23.0 107-7, 1.24.0 107-7, and 1.25.0 107-7.

Version patch update 1.0.7_185, released 13 November 2023

Updates the storage-secret-sidecar image to v1.2.28.
Updates Golang to 1.20.10.
Image tags: 1.20.0 107-7, 1.21.0 107-7, 1.22.0 107-7, 1.23.0 107-7, 1.24.0 107-7, and 1.25.0 107-7.

Version patch update 1.0.7_102, released 15 September 2023

Image tags: 1.22.0-107-7, 1.23.0-107-7, 1.24.0-107-7, 1.25.0-107-7, 1.26.1-107-7, 1.27.2-107-7.
Updated the storage-secret-sidecar image to v1.2.26.
Golang update to resolve CVE-2023-29409.

Version patch update 1.0.7_83, released 7 August 2023

Image tags: 1.20.0 107-6, 1.21.0 107-6, 1.22.0 107-6, 1.23.0 107-6, 1.24.0 107-6,1.25.0 107-6.
Updates the storage-secret-sidecar image to v1.2.25.
Resolves the followings CVEs:CVE-2023-2283,CVE-2023-26604, CVE-2020-24736, and CVE-2023-1667.