CVE-2018-1000861
KEVJenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability
Description
A code execution vulnerability exists in the Stapler web framework used by Jenkins
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HPublishedDec 10, 2018
Last modifiedJun 17, 2026
Added to KEVFeb 10, 2022
Remediation dueAug 10, 2022
References
- packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.htmlThird Party AdvisoryVDB Entry
- securityfocus.com/bid/106176Broken Link
- access.redhat.com/errata/RHBA-2019:0024Third Party Advisory
- jenkins.io/security/advisory/2018-12-05/Vendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-1000861US Government Resource
0 recent articles mention this CVE
89
Risk assessment · Critical
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1538 days
- CVSS
- 9.8 CRITICAL
- EPSS (30-day exploit probability)
- 98.3% · top 1% of all CVEs
- Weakness
- CWE-502
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.