HAProxy known bugs for version v2.6.28 (maintenance branch 2.6) :  3 

This version (2.6.28) is a release belonging to maintenance branch 2.6 whose latest version is 2.6.29. If your version is not the last one in the maintenance branch, you are missing fixes for known bugs, and by not updating you are needlessly taking the responsibility for the risk of unexpected service outages and exposing your web site to possible security issues.

The HAProxy development team takes a great care of maintaining stable versions so that all users can apply bug fixes without having to take the risk of upgrading to a new branch. In turn users are expected to apply the fixes when the development team estimates that they were worth being backported to stable branches.

Quick links

Other versions in the same branch

This branch contains the following releases :

DateVersionComment
2026-05-112.6.29 ⇐ last
2026-05-062.6.28 ⇐ yours
2026-04-302.6.27 
2026-04-232.6.26 
2026-03-202.6.25 
2026-03-092.6.24 
2025-10-032.6.23 
2025-04-222.6.22 
2025-01-292.6.21 
2024-11-082.6.20 
2024-09-192.6.19 
2024-06-182.6.18 
2024-04-052.6.17 
2023-12-132.6.16 
2023-08-092.6.15 
2023-06-092.6.14 
2023-05-022.6.13 
2023-03-282.6.12 
2023-03-172.6.11 
2023-03-102.6.10 
2023-02-142.6.9 
2023-01-242.6.8 
2022-12-022.6.7 
2022-09-222.6.6 
2022-09-032.6.5 
2022-08-222.6.4 
2022-08-192.6.3 
2022-07-222.6.2 
2022-06-212.6.1 
2022-05-312.6.0 

Known bugs affecting this version, and already fixed in the maintenance branch

These fixes have already been queued for a more recent 2.6 version. Some of them might have already been released in a more recent version than yours, and other ones might still be pending in the maintenance branch for a future release. The list may be empty if you're already on the latest version and no new fix was backported.

Bugs are almost always tagged with a severity (some people forget the severity tag when the bug is minor). The following severities are used :

Total known bugs in this version by category :

TotalCRITICALMAJORMEDIUMMINOR
3 0 0 2 1

Click on the subjects below to get the full description of the bug :

Merge dateSubject - Severity (minor, medium, major, critical)
2026-05-11BUG/MINOR: cfgparse-listen: do not emit extraneous line in rule order warnings
2026-05-07BUG/MEDIUM: stick-table: properly check permissions on CLI's set/clear cmd
2026-05-07BUG/MEDIUM: mux-h2: fix the detection of the ext connect support
2026-05-07Revert "BUG/MINOR: mux-h2: condition the processing of 8441 extension to global setting"
2026-05-07Revert "BUG/MEDIUM: cli: fix master CLI connection slot leak on client disconnect"

Back to the list of branches and versions
Back to the HAProxy page