HAProxy known bugs for maintenance branch 3.1 :  0 

This is maintenance branch 3.1 whose latest version is 3.1.17. 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 3.1.17, you're running with known bugs.

Quick links

Versions available in this branch

This branch contains the following releases :

DateVersionComment
2026-03-193.1.17 ⇐ last
2026-03-093.1.16 
2026-02-193.1.15 
2026-02-123.1.14 
2026-01-293.1.13 
2025-12-223.1.12 
2025-12-173.1.11 
2025-11-073.1.10 
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 (3.1.17)

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
2026-04-03BUG/MINOR: ssl: fix memory leak in ssl_fc_crtname by using SSL_CTX ex_data index
2026-04-03BUG/MINOR: cfgcond: fail cleanly on missing argument for "feature"
2026-04-03BUG/MINOR: cfgcond: always set the error string on awslc_api checks
2026-04-03BUG/MINOR: cfgcond: always set the error string on openssl_version checks
2026-04-03BUG/MINOR: cfgcond: properly set the error pointer on evaluation error
2026-04-02BUG/MINOR: mux_quic: fix uninit for QMux emission
2026-04-02DEBUG: connection/flags: add QSTRM flags for the decoder
2026-04-02BUG/MINOR: quic: fix documentation for transport params decoding
2026-04-01BUG/MINOR: tcpcheck: Use tcpcheck context for expressions parsing
2026-04-01BUG/MINOR: tcpcheck: Don't enable http_needed when parsing HTTP samples
2026-04-01BUG/MINOR: tcpcheck: Remove unexpected flag on tcpcheck rules for httchck option
2026-04-01BUG/MINOR: http_act: Make set/add-headers-bin compatible with ACL conditions
2026-04-01BUG/MINOR: http_act: Properly handle decoding errors in *-headers-bin actions
2026-03-31BUG/MEDIUM: mux-h1: Don't set MSG_MORE on bodyless responses forwarded to client
2026-03-31BUG/MEDIUM: map/cli: CLI commands lack admin permission checks
2026-03-31BUG/MEDIUM: ssl/ocsp: ocsp commands are missing permission checks
2026-03-31BUG/MEDIUM: ssl/cli: tls-keys commands are missing permission checks
2026-03-31BUG/MEDIUM: map/cli: map/acl commands warn when accessed without admin level
2026-03-31BUG/MEDIUM: ssl/ocsp: ocsp commands warn when accessed without admin level
2026-03-31BUG/MEDIUM: ssl/cli: tls-keys commands warn when accessed without admin level
2026-03-30BUG/MINOR: net_helper: fix length controls on ip.fp tcp options parsing
2026-03-30BUG/MINOR: stconn: Always declare the SC created from healthchecks as a back SC
2026-03-30BUG/MINOR: quic: close conn on packet reception with incompatible frame
2026-03-27BUG/MEDIUM: htx: Fix htx_xfer() to consume more data than expected
2026-03-27BUG/MINOR: acme: fix task allocation leaked upon error
2026-03-27BUG/MEDIUM: acme: skip doing challenge if it is already valid
2026-03-27BUG/MINOR: http-ana: Only consider client abort for abortonclose
2026-03-27BUG/MINOR: config: Properly test warnif_misplaced_* return values
2026-03-27BUG/MINOR: config: Warn only if warnif_cond_conflicts report a conflict
2026-03-26BUG/MEDIUM: check: Don't reuse the server xprt if we should not
2026-03-25BUG/MINOR: acme: permission checks on the CLI
2026-03-25BUG/MINOR: ech: permission checks on the CLI
2026-03-23BUG/MINOR: acme/cli: fix argument check and error in 'acme challenge_ready'
2026-03-23BUG/MINOR: acme: replace atol with len-bounded __strl2uic() for retry-after
2026-03-23BUG/MINOR: acme: free() DER buffer on a2base64url error path
2026-03-23BUG/MINOR: acme: NULL check on my_strndup()
2026-03-23Revert "BUG/MEDIUM: mux-h2: make sure to always report pending errors to the stream"
2026-03-23BUG/MINOR: http_htx: fix null deref in http-errors config check
2026-03-23BUG/MINOR: acme/cli: wrong argument check in 'acme renew'
2026-03-23BUG/MINOR: acme: wrong error when checking for duplicate section
2026-03-23BUG/MINOR: acme: leak of ext_san upon insertion error
2026-03-23BUG/MEDIUM: acme: fix multiple resource leaks in acme_x509_req()
2026-03-20BUG/MINOR: qpack: fix 62-bit overflow and 1-byte OOB reads in decoding
2026-03-20BUG/MINOR: sock: adjust accept() error messages for ENFILE and ENOMEM
2026-03-19BUG/MINOR: mworker: fix sort order of mworker_proc in 'show proc'
2026-03-19BUG/MINOR: mworker/cli: fix show proc pagination losing entries on resume

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