HAProxy known bugs for version v3.0.9 (maintenance branch 3.0) :  61 

This version (3.0.9) is a release belonging to maintenance branch 3.0 whose latest version is 3.0.11. 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
2025-06-023.0.11 ⇐ last
2025-04-223.0.10 
2025-03-203.0.9 ⇐ yours
2025-01-293.0.8 
2024-12-123.0.7 
2024-11-073.0.6 
2024-09-193.0.5 
2024-09-033.0.4 
2024-07-113.0.3 
2024-06-143.0.2 
2024-06-103.0.1 
2024-05-293.0.0 

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

These fixes have already been queued for a more recent 3.0 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
61 0 2 18 41

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

Merge dateSubject - Severity (minor, medium, major, critical)
2025-06-02BUG/MEDIUM: httpclient: Throw an error if an lua httpclient instance is reused
2025-05-28BUG/MINOR: limits: compute_ideal_maxconn: don't cap remain if fd_hard_limit=0
2025-05-27BUG/MEDIUM: hlua: Fix getline() for TCP applets to work with applet's buffers
2025-05-27BUG/MEDIUM: hlua: Properly detect shudowns for TCP applets based on the new API
2025-05-27BUG/MINOR: h3: Set HTX flags corresponding to the scheme found in the request
2025-05-27BUG/MAJOR: cache: Crash because of wrong cache entry deleted
2025-05-27BUG/MEDIUM: server: fix potential null-deref after previous fix
2025-05-27BUG/MEDIUM: server: fix crash after duplicate GUID insertion
2025-05-20BUG/MINOR: mux-h2: Reset streams with NO_ERROR code if full response was already sent
2025-05-20BUG/MEDIUM: stconn: Disable 0-copy forwarding for filters altering the payload
2025-05-20BUG/MINOR: h3: don't insert more than one Host header
2025-05-20BUG/MINOR: sink: detect and warn when using "send-proxy" options with ring servers
2025-05-20BUG/MINOR: hlua: Fix Channel:data() and Channel:line() to respect documentation
2025-05-20BUG/MINOR: threads: fix soft-stop without multithreading support
2025-05-20BUG/MINOR: ssl/ckch: always free() the previous entry during parsing
2025-05-20BUG/MINOR: cli: fix too many args detection for commands
2025-05-20BUG/MEDIUM: peers: hold the refcnt until updating ts->seen
2025-05-20BUG/MINOR: quic: reject invalid max_udp_payload size
2025-05-20BUG/MINOR: quic: fix TP reject on invalid max-ack-delay
2025-05-20BUG/MINOR: quic: use proper error code on invalid received TP value
2025-05-20BUG/MINOR: quic: reject retry_source_cid TP on server side
2025-05-20BUG/MINOR: quic: use proper error code on invalid server TP
2025-05-20BUG/MINOR: quic: use proper error code on missing CID in TPs
2025-05-20BUG/MINOR: proxy: only use proxy_inc_fe_cum_sess_ver_ctr() with frontends
2025-05-20BUG/MINOR: mux-h1: Fix trace message in h1_detroy() to not relay on connection
2025-05-20BUG/MINOR: mux-h1: Don't pretend connection was released for TCP>H1>H2 upgrade
2025-05-20BUG/MINOR: dns: prevent ds accumulation within dss
2025-05-20BUG/MINOR: dns: add tempo between 2 connection attempts for dns servers
2025-05-20BUG/MAJOR: listeners: transfer connection accounting when switching listeners
2025-05-20BUG/MINOR: cli: Issue an error when too many args are passed for a command
2025-04-30BUG/MEDIUM: mux-fcgi: Try to fully fill demux buffer on receive if not empty
2025-04-22BUG/MINOR: rhttp: ensure GOAWAY can be emitted after reversal
2025-04-22BUG/MINOR: rhttp: fix reconnect if timeout connect unset
2025-04-22BUG/MINOR: mux-h2: prevent past scheduling with idle connections
2025-04-22BUG/MINOR debug: fix !USE_THREAD_DUMP in ha_thread_dump_fill()
2025-04-22DEBUG: epoll: store and compare the FD's generation count with reported event
2025-04-22DEBUG: fd: add a counter of takeovers of an FD since it was last opened
2025-04-22BUG/MEDIUM: mux-fcgi: Properly handle read0 on partial records
2025-04-22BUG/MINOR: stktable: invalid use of stkctr_set_entry() with mixed table types
2025-04-22DEBUG: stream: Add debug counters to track some client/server aborts
2025-04-22BUG/MINOR: quic: do not crash on CRYPTO ncbuf alloc failure
2025-04-17BUG/MEDIUM: hlua: fix hlua_applet_{http,tcp}_fct() yield regression (lost data)
2025-04-17BUG/MINOR: h3: reject request URI with invalid characters
2025-04-17BUG/MINOR: h3: reject invalid :path in request
2025-04-17BUG/MINOR: h3: filter upgrade connection header
2025-04-17BUG/MEDIUM: h3: trim whitespaces in header value prior to QPACK encoding
2025-04-17BUG/MEDIUM: h3: trim whitespaces when parsing headers value
2025-04-16BUG/MINOR: sink: add tempo between 2 connection attempts for sft servers (2)
2025-04-15BUG/MEDIUM: http-ana: Report 502 from req analyzer only during rsp forwarding
2025-04-15BUG/MINOR: http-ana: Properly detect client abort when forwarding the response
2025-04-15BUG/MINOR: hlua: fix invalid errmsg use in hlua_init()
2025-04-15BUG/MINOR: backend: do not use the source port when hashing clientip
2025-04-15BUG/MEDIUM: sample: fix risk of overflow when replacing multiple regex back-refs
2025-04-15BUG/MINOR: log: fix CBOR encoding with LOG_VARTEXT_START() + lf_encode_chunk()
2025-04-15BUG/MINOR: hlua_fcn: fix potential UAF with Queue:pop_wait()
2025-04-15BUG/MEDIUM: stream: Fix a possible freeze during a forced shut on a stream
2025-04-15BUG/MEDIUM: backend: fix reuse with set-dst/set-dst-port
2025-04-15BUG/MINOR: backend: do not overwrite srv dst address on reuse
2025-04-15BUG/MINOR: rhttp: fix incorrect dst/dst_port values
2025-04-15BUG/MINOR: log: fix gcc warn about truncating NUL terminator while init char arrays
2025-04-15BUG/MINOR: mux-quic: remove extra BUG_ON() in _qcc_send_stream()
2025-04-15BUG/MEDIUM: mux-quic: fix crash on RS/SS emission if already close local
2025-04-03BUG/MEDIUM: peers: prevent learning expiration too far in futur from unsync node
2025-04-03BUG/MINOR: peers: fix expire learned from a peer not converted from ms to ticks

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