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CVE-2018-1000861: Jenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability

criticalknown exploitedpublic exploitCVE-2018-1000861
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
A code execution vulnerability exists in the Stapler web framework used by Jenkins

CSIRTS triage

vendor: Jenkinsproduct: StaplerRemote code execution
What
A code execution vulnerability exists in the Stapler web framework used by Jenkins.
Who is affected
Deployments of Jenkins using the Stapler framework are affected.
Urgency
Remediation is urgent as the vulnerability is critical and actively exploited.
Action
Upgrade to the latest version of Jenkins.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-02-10
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2018-1000861

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2018-1000861coverage & exploitation statusNVD · CVE.org

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