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ExploitedIn CISA KEVFix available

CVE-2018-1000861

Exploitation confirmed. First attested on 2022-02-10 by CISA-ADP, CISA KEV, GCVE · kevintel, GCVE · shadowserver.

  • Published2018-12-10
  • WeaknessCWE-502

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2018-12-1014:29CVE publishedNVD
  2. 2022-02-10Added to the CISA KEV catalogCISA KEV
  3. 2022-02-10Listed as exploited by GCVEGCVE
  4. 2022-02-10Exploitation first reportedCISA KEV
  5. 2025-02-0716:28SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-04 09:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-1000861?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-1000861?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Jenkins
BranchAffectedFixed in
2.138≤ 2.138.3no fix published
2.153≤ 2.153no fix published
jenkins-core
BranchAffectedFixed in
2.x≥ 2.140, < 2.1542.154
2.138< 2.138.42.138.4
Redhat openshift container platform
BranchAffectedFixed in
3.11= 3.11no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • jenkinsRed Hat:openshift:3.11::el7all versions · fixed in 0:2.138.4.1544416383-1.el7

Vendor advisories

  • CVE-2018-1000861 Red Hat Product Security2 products fixed · 13 known affected

    jenkins: code execution through crafted URLs (SECURITY-595)

    jenkins as a component of Red Hat OpenShift Container Platform 3.10 · jenkins.src as a component of Red Hat OpenShift Container Platform 3.10 · jenkins as a component of Red Hat OpenShift Container Platform 3.2 · +10 more

  • RHBA-2019:0024 Red Hat Product Security2 products fixed

    Red Hat Bug Fix Advisory: OpenShift Container Platform 3.11 bug fix and enhancement update

Full record on NVD

Fix

  1. CISA’s required action: Apply updates per vendor instructions.due 2022-08-10
  2. Vendor fix Red Hat Product Security RHBA-2019:0024 · 2 productsBefore applying this update, ensure all previously released errata relevant to your system have been applied. See the following documentation, which will be updated shortly for release 3.11.59, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata updat…
  3. No fix available, says the vendor Red Hat Product Security CVE-2018-1000861 · 13 productsAffected

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
3 repositories, unverified1NTheKut/CVE-2019-1003000_RCE-DETECTIONsmokeintheshell/CVE-2018-1000861CyberCTF/vulhub-jenkins-cve-2018-1000861
PoC-in-GitHub
Metasploit modules
1 moduleexploit/multi/http/jenkins_metaprogrammingrank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-02-10
Patch Due Date
2022-08-10
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2018-12-10
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-hhpm-5cp2-hg4x

Frequently asked questions

What is CVE-2018-1000861?

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.

Is CVE-2018-1000861 actively exploited?

Yes. CVE-2018-1000861 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-08-10.

What is the CVSS score for CVE-2018-1000861?

CVE-2018-1000861 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record