CVE-2016-1000221
Logstash Logs Sensitive Information
Logstash prior to version 2.3.4, Elasticsearch Output plugin would log to file HTTP authorization headers which could contain sensitive information.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Logstash prior to version 2.3.4, Elasticsearch Output plugin would log to file HTTP authorization headers which could contain sensitive information.
- Record
CVE-2016-1000221- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE List No score
Logstash prior to version 2.3.4, Elasticsearch Output plugin would log to file HTTP authorization headers which could contain sensitive information.
- Record
CVE-2016-1000221- Updated
- 2026-11-02
EUVDEUVD-2022-5343 No score
Logstash prior to version 2.3.4, Elasticsearch Output plugin would log to file HTTP authorization headers which could contain sensitive information.
- Record
EUVD-2022-5343- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vcmm-ppqx-95ch
Logstash Logs Sensitive Information
Logstash prior to version 2.3.4, Elasticsearch Output plugin would log to file HTTP authorization headers which could contain sensitive information.
- Record
GHSA-vcmm-ppqx-95ch- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSV
Logstash prior to version 2.3.4, Elasticsearch Output plugin would log to file HTTP authorization headers which could contain sensitive information.
- Record
CVE-2016-1000221- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-vcmm-ppqx-95ch
Logstash Logs Sensitive Information
Logstash prior to version 2.3.4, Elasticsearch Output plugin would log to file HTTP authorization headers which could contain sensitive information.
- Record
GHSA-vcmm-ppqx-95ch- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
logstash-coreRubyGems |
before 2.3.4 | 2.3.4 |
logstash-coreRubyGems |
before 2.3.4, plus listed versions 1.5.01.5.0.beta21.5.0.rc11.5.0.rc1.11.5.0.rc2 Show 45 moreShow less1.5.0.rc2.snapshot1.5.0.rc31.5.0.rc3.snapshot11.5.0.rc3.snapshot21.5.0.rc3.snapshot31.5.0.rc3.snapshot41.5.0.rc3.snapshot51.5.0.rc3.snapshot61.5.0.rc41.5.0.rc4.snapshot11.5.0.rc4.snapshot21.5.0.snapshot11.5.11.5.1.snapshot11.5.21.5.2.11.5.2.21.5.2.snapshot11.5.2.snapshot21.5.31.5.3.snapshot11.5.3.snapshot21.5.41.5.4.snapshot11.5.4.snapshot21.5.4.snapshot31.5.51.5.62.0.02.0.0.beta12.0.0.beta22.0.0.beta32.0.0.rc12.0.12.0.1.snapshot12.1.02.1.0.snapshot12.1.0.snapshot22.1.0.snapshot32.1.0.snapshot42.1.12.1.22.1.2.snapshot12.1.32.2.0 |
2.3.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2016-1000221 is a high vulnerability (CVSS 7.5) in Elastic Logstash, published June 16, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.78%, the 78th percentile. Fixed in logstash-core 2.3.4.
References
securityfocus.com/bid/99126
elastic.co/community/security
nvd.nist.gov/vuln/detail/CVE-2016-1000221
web.archive.org/web/20210124065200/http://www.securityfocus.com/bid/99126
github.com/elastic/logstash/commit/0999050144adad7f4d99d43e561c2882fd7c512b
Left out here: 23 versions. The JSON record has them.