HAProxy known bugs for maintenance branch 3.1 :  0 

This is maintenance branch 3.1 whose latest version is 3.1.10. 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. In short, if you are running any 3.1 version other than 3.1.10, you're running with known bugs.

Quick links

Versions available in this branch

This branch contains the following releases :

DateVersionComment
2025-11-073.1.10 ⇐ last
2025-10-033.1.9 
2025-06-023.1.8 
2025-04-173.1.7 
2025-03-203.1.6 
2025-02-203.1.5 
2025-02-193.1.4 
2025-01-293.1.3 
2025-01-083.1.2 
2024-12-113.1.1 
2024-11-263.1.0 

Fixes for known bugs pending in this branch since the last release (3.1.10)

These fixes have already been queued for the next 3.1 release but no version was released with them yet. Note that fixes are backported several at a time from the development branch to maintenance branches, and the absence of a fix here doesn't mean none will be issued soon.

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 the latest version of this branch by category :

TotalCRITICALMAJORMEDIUMMINOR
0 0 0 0 0

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

Merge dateSubject - Severity (minor, medium, major, critical)

Known bugs fixed in the development branch after the last commit in this branch

It is important to understand that not all of these commits are necessarily relevant to this version, but clicking on them will show the bug description. All fixes are made first in the development branch and then backported to the maintenance branches. This ensures no fix is lost when upgrading. If a fix was marked for backporting to this branch and is not there yet, it's likely that it is still missing. Do not hesitate to ask on the haproxy mailing list if you feel like a fix has been skipped.

DateSubject
2025-11-14BUG/MINOR: quic-be: backend SSL session reuse fix (OpenSSL 3.5)
2025-11-14BUG/MINOR: quic-be: missing version negotiation
2025-11-14BUG/MINOR: check: fix QUIC check test when QUIC disabled
2025-11-14DEBUG: servers: add a few checks for stress-testing idle conns
2025-11-14DEBUG: add BUG_ON_STRESS(): a BUG_ON() implemented only when DEBUG_STRESS > 0
2025-11-14DEBUG: extend DEBUG_STRESS to ease testing and turn on extra checks
2025-11-14BUG/MEDIUM: connection: do not reinsert a purgeable conn in idle list
2025-11-14Revert "BUG/MEDIUM: connections: permit to permanently remove an idle conn"
2025-11-14BUG/MEDIUM: h1: prevent a crash on HTTP/2 upgrade
2025-11-14BUG/MINOR: stick-tables: Fix return value for __stksess_kill()
2025-11-14BUG/MEDIUM: stick-tables: Always return the good stksess from stktable_set_entry
2025-11-14BUG/MINOR: check: fix reuse-pool if MUX inherited from server
2025-11-14BUG/MINOR: check: only try connection reuse for http-check rulesets
2025-11-13BUG/MINOR: acme: can't override the default resolver
2025-11-13BUG/MEDIUM: acme: move from mt_list to a rwlock + ebmbtree
2025-11-13BUG/MEDIUM: quic-be: do not launch the connection migration process
2025-11-13BUG/MINOR: acme: more explicit error when BIO_new_file()
2025-11-12BUG/MEDIUM: init: 'devnullfd' not properly closed for master
2025-11-12BUG/MINOR: do not account backend connections into maxconn
2025-11-11BUG/MEDIUM: stats-file: fix shm-stats-file preload not working anymore
2025-11-10BUG/MEDIUM: quic: handle collision on CID generation
2025-11-10BUG/MINOR: quic: close connection on CID alloc failure
2025-11-10BUG/MEDIUM: config: for word expansion, empty or non-existing are the same
2025-11-07BUG/MINOR: acme: avoid a possible crash on error paths
2025-11-07BUG/MEDIUM: proxy: use aligned allocations for struct proxy_per_tgroup
2025-11-07BUG/MEDIUM: proxy: use aligned allocations for struct proxy
2025-11-07BUG/MEDIUM: stick-tables: Make sure updates are seen as local
2025-11-07BUG/MEDIUM: peers: Fix update message parsing during a full resync
2025-11-07BUG/MINOR: acme: wrong dns-01 challenge in the log

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