HAProxy 3.3 lifecycle
Current status
HAProxy 3.3 is currently in standard support.
Security: 2 tracked advisories affecting this line. Details below — lifecycle and vulnerability status are separate.
Official lifecycle source: HAProxy Homepage Branch Table
- Support phase
- standard support
- End of life
- 31 Mar 2027
- Latest release
- 3.3.0
- Released
- 26 Nov 2025
At a glance
- Version line
- 3.3
- Initial release
- 26 Nov 2025
- Lifecycle phase
- standard support
- Latest stable
- 3.3.0
- Latest release date
- 26 Nov 2025
- EOL
- 31 Mar 2027
- Until EOL
- ~7 months
- Risk
- low
- Releases tracked
- 1
Lifecycle timeline
Phases from published LifecyclePeriod records. Missing phases are not inferred.
Release
26 Nov 2025
standard supportcurrent
26 Nov 2025 → 31 Mar 2027
Source: HAProxy Homepage Branch Table
end of life
31 Mar 2027 → —
Source: HAProxy Homepage Branch Table
HAProxy 3.3 is currently in standard support.
Upgrade options
Newer supported HAProxy version lines from CompatHub lifecycle data. Compatibility and security context use existing evidence only.
You are on HAProxy 3.3
SupportedEOL 31 March 2027
Supported upgrade options
- HAProxy 3.4Upgrade planner →SupportedEOL 30 June 2031· ~50 months more support· 1 minor version newer
Security
Advisories affecting HAProxy 3.3 (OSV.dev evidence). Known exploited status, due dates, and ransomware use from CISA KEV when matched.
- Known vulnerabilities
- 2
- Known exploited
- 0
- Highest CVSS
- —
- CVE-2026-55204
HAProxy - NULL Pointer Dereference in hpack_dht_insert Function
- Affected:
- <=3.4.0
- Source:
- OSV source · Advisory
- CVE-2026-55203
HAProxy - Integer Overflow in FCGI Demux Record Length Field
- Affected:
- <=3.4.0
- Source:
- OSV source · Advisory
Latest release
Release history
1 concrete release tracked for this line.
| Version | Release date | Channel | Source |
|---|---|---|---|
| 3.3.0 | 26 Nov 2025 | stable | Source |
Release activity
- Total releases
- 1
- Last 30 days
- 0
- Last 90 days
- 0
- Most recent
- 26 Nov 2025
Should I use this version?
Suitable for new deployments
HAProxy 3.3 is currently supported (standard support).
Version comparison
Compact comparison against the nearest relevant release lines.
Sources
Where this information comes from.
Lifecycle sources
- HAProxy Homepage Branch Tablefirst party · high confidence
Official source: https://www.haproxy.org/
Last verified 2 Sept 2026
- OSV.devfirst party
Official source: https://osv.dev
Verification time not recorded
- NVD (NIST)first party
Official source: https://nvd.nist.gov
Verification time not recorded
- CISA Known Exploited Vulnerabilitiesfirst party
Official source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Verification time not recorded
Release sources
- HAProxy Homepage Branch Tablefirst party · high confidence
Official source: https://www.haproxy.org/
Last verified 2 Sept 2026
- HAProxy GitHub Tagsfirst party
Official source: https://github.com/haproxy/haproxy/tags
Verification time not recorded
Data coverage
Last checked = last successful upstream check. Latest source update = when upstream content last changed.
- Releases tracked
- 1
- Lifecycle periods
- 2
- EOL
- Known
- Provenance records
- 3
- Data last checked
- 2 Sept 2026
- Latest source update
- 2 Sept 2026