HAProxy known bugs for version v3.3.2 (maintenance branch 3.3) :  36 

This version (3.3.2) is a release belonging to maintenance branch 3.3 whose latest version is 3.3.4. 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.

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Other versions in the same branch

This branch contains the following releases :

DateVersionComment
2026-02-193.3.4 ⇐ last
2026-02-123.3.3 
2026-01-293.3.2 ⇐ yours
2025-12-193.3.1 
2025-11-263.3.0 

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

These fixes have already been queued for a more recent 3.3 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
36 0 3 9 24

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

Merge dateSubject - Severity (minor, medium, major, critical)
2026-02-19BUG/MINOR: backend: check delay MUX before conn_prepare()
2026-02-19BUG/MINOR: acme: fix X509_NAME leak when X509_set_issuer_name() fails
2026-02-19BUG/MEDIUM: ssl: SSL backend sessions used after free
2026-02-18BUG/MINOR: http-ana: Stop to wait for body on client error/abort
2026-02-18BUG/MINOR: flt-trace: Properly compute length of the first DATA block
2026-02-18BUG/MEDIUM: applet: Fix test on shut flags for legacy applets (v2)
2026-02-18BUG/MEDIUM: mux-h1: Stop sending vi fast-forward for unexpected states
2026-02-18BUG/MEDIUM: mux-h2/quic: Stop sending via fast-forward if stream is closed
2026-02-18BUG/MEDIUM: h3: reject frontend CONNECT as currently not implemented
2026-02-18BUG/MAJOR: Revert "MEDIUM: mux-quic: add BUG_ON if sending on locally closed QCS"
2026-02-18BUG/MINOR: ssl: error with ssl-f-use when no "crt"
2026-02-18BUG/MINOR: ssl: clarify ssl-f-use errors in post-section parsing
2026-02-18BUG/MINOR: ssl: fix leak in ssl-f-use parser upon error
2026-02-18BUG/MINOR: ssl: double-free on error path w/ ssl-f-use parser
2026-02-18BUG/MINOR: ssl: lack crtlist_dup_ssl_conf() declaration
2026-02-18BUG/MINOR: deviceatlas: set cache_size on hot-reloaded atlas instance
2026-02-18BUG/MINOR: deviceatlas: fix deinit to only finalize when initialized
2026-02-18BUG/MINOR: deviceatlas: fix resource leak on hot-reload compile failure
2026-02-18BUG/MINOR: deviceatlas: fix double-checked locking race in checkinst
2026-02-18BUG/MINOR: deviceatlas: fix cookie vlen using wrong length after extraction
2026-02-18BUG/MINOR: deviceatlas: fix off-by-one in da_haproxy_conv()
2026-02-18BUG/MEDIUM: deviceatlas: fix resource leaks on init error paths
2026-02-18BUG/MINOR: deviceatlas: add NULL checks on strdup() results in config parsers
2026-02-18BUG/MINOR: deviceatlas: add missing return on error in config parsers
2026-02-12BUG/MAJOR: quic: fix parsing frame type
2026-02-12BUG/MAJOR: quic: reject invalid token
2026-02-12BUG/MINOR: backend: fix access on shared counters array
2026-02-12BUG/MINOR: quic: ensure handshake speed up is only run once per conn
2026-02-12BUG/MINOR: ssl: SSL_CERT_DIR environment variable doesn't affect haproxy
2026-02-10BUG/MINOR: startup: handle a possible strdup() failure
2026-02-10BUG/MINOR: startup: fix allocation error message of progname string
2026-02-10BUG/MINOR: config: Fix setting of alt_proto
2026-02-10BUG/MEDIUM: lb-chash: always properly initialize lb_nodes with dynamic servers
2026-02-10BUG/MINOR: cpu-topo: count cores not cpus to distinguish core types
2026-02-10BUG/MEDIUM: threads: Atomically set TH_FL_SLEEPING and clr FL_NOTIFIED
2026-01-30BUG/MEDIUM: applet: Fix test on shut flags for legacy applets

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