Logstash 9.1
Logstash 9.1
The Logstash 9.1 reached end of service life on Feb 3, 2026 — Logstash no longer ships security patches or fixes for it. Our third-party support keeps it safe to run: 24/7 engineers manage issues, remediate vulnerabilities, and help you maintain compliance.
24/7 engineers own your Logstash 9.1 incidents end to end.
Mitigation and patch-around guidance when the vendor no longer ships fixes.
Controls evidence and documentation that keep auditors satisfied.
Specifications
- product
- logstash
- release
- 9.1
- product Label
- Logstash
- release Label
- 9.1
- codename
- lts
- latest Version
- 9.1.10
- release Date
- 2025-07-29
- maintained
- source Url
- https://endoflife.date/logstash
Lifecycle Dates
- End of Service Life
- Feb 3, 2026
- Last OEM Support
- Feb 3, 2026
OEM vs. 3rd Party Support
See how third-party support compares to the vendor contract for Logstash 9.1 — monitoring, break/fix, vulnerability work, operations and compliance, before and after EOSL.
| Feature | OEM Support | 3rd Party Support |
|---|---|---|
| Post-EOSL Support | ||
| Break/Fix Support | Until EOSL | |
| 24/7 Monitoring | ||
| Vulnerability Scanning & Remediation | ||
| Managed Operations | ||
| Procedure & Configuration Review | ||
| Compliance & Audit Documentation | Limited | |
| Discounted Migration to Other Platforms |
Why Choose 3rd Party Support for Logstash 9.1?
Vulnerability Remediation
Scanning, mitigation and patch-around guidance for Logstash 9.1 when the vendor no longer ships fixes.
Compliance Maintenance
Procedure review, controls evidence and the documentation auditors ask for — maintained continuously, not scrambled at audit time.
24/7 Expert Support
Engineers who know this release monitor, manage and fix issues around the clock — break/fix to managed operations.
Logstash 9.1 Support: Frequently Asked Questions
Is the Logstash 9.1 still supported?
Logstash ended support for the Logstash 9.1 on Feb 3, 2026 — no more patches or fixes from the vendor. Third-party support keeps it covered: our engineers manage issues, remediate vulnerabilities, and help you maintain compliance for as long as you run it.
When is the Logstash 9.1 end of service life (EOSL) date?
Logstash lists the end of service life for the Logstash 9.1 as Feb 3, 2026.
Can I keep using the Logstash 9.1 after its EOSL date?
Yes. EOSL means Logstash stops issuing patches and support — the software itself keeps running. Third-party support covers it from there: issue management, security vulnerability remediation, and the compliance documentation auditors ask for, for as long as you choose to run it.
How much does third-party support for the Logstash 9.1 cost?
Typically 40-70% below the OEM maintenance renewal price. Exact pricing depends on quantity, service level and location — request a quote and we respond within 24 hours.
Known Vulnerabilities Affecting Logstash 9.1
1 published CVE affects the Logstash 9.1, including 1 rated critical or high severity. Logstash no longer ships security patches for this release — our engineers provide mitigation guidance, workarounds and hardening support.
| CVE | Severity | CVSS | Published | Summary |
|---|---|---|---|---|
| CVE-2026-33466 | HIGH | 8.1 | Apr 8, 2026 | Improper Limitation of a Pathname to a Restricted Directory (CWE-22) in Logstash can lead to arbitrary file write and potentially remote code execution via Relative Path Traversal (CAPEC-139). The archive extraction utilities used by Logstash do not properly validate file paths within compressed archives. An attacker who can serve a specially crafted archive to Logstash through a compromised or attacker-controlled update endpoint can write arbitrary files to the host filesystem with the privileg |