Jenkins has a Denial of service vulnerability in HTTP-based CLI
Jenkins 2.540 and earlier, LTS 2.528.2 and earlier does not properly close HTTP-based CLI connections when the connection stream becomes corrupted, allowing unauthenticated attackers to cause a denial of service.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.jenkins-ci.main:cli | >= 2.529, < 2.541, < 2.528.3 | 2.541, 2.528.3 |
| Java / Kotlin (Maven) | org.jenkins-ci.main:jenkins-core | >= 2.529, < 2.541, < 2.528.3 | 2.541, 2.528.3 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-404- Platform
- Java / Kotlin (Maven)
- Package
org.jenkins-ci.main:cli, org.jenkins-ci.main:jenkins-core- Disclosed
- 10.12.2025
- Updated
- 11.10.2026 13:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-9p56-p6mw-w8qc - CC BY 4.0
Vulnerability history: org.jenkins-ci.main:jenkins-core
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 259
- First → latest
- 01.2022 06.2026
- Without a fix
- 1
- Exploited in attacks
- 4
Severity breakdown
- Critical 19
- High 62
- Medium 158
- Low 20
Disclosures per year
- 2022: 213
- 2023: 14
- 2024: 6
- 2025: 14
- 2026: 12
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Jenkins has a Denial of service vulnerability in HTTP-based CLI this entry
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