CVE DATABASE / CVE-2018-1000861
CVE-2018-1000861
Jenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability
Confirmed exploited in the wild. Added 2022-02-10.
Federal remediation due 2022-08-10.
Required action: Apply updates per vendor instructions.
Summary
A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in stapler/core/src/main/java/org/kohsuke/stapler/MetaClass.java that allows attackers to invoke some methods on Java objects by accessing crafted URLs that were not intended to be invoked this way.
CVSS 3.1 breakdown
| Base score | 9.8 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
Use our free CVE Lookup tool for the latest NVD record, or browse the full CISA KEV catalog.
References
- http://packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.html
- http://www.securityfocus.com/bid/106176
- https://access.redhat.com/errata/RHBA-2019:0024
- https://jenkins.io/security/advisory/2018-12-05/#SECURITY-595
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-1000861
Data: NIST NVD + CISA KEV. NVD last modified 2025-11-05. Always verify against the vendor advisory before acting.