Skip to content
Noroxi
NVD / CVE Program· CNA mitre

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…

CriticalCVSS 9.8 · v3.1KEVWeaponized Fix available

Noroxi assessment

Priority: Now (action score 98/100)

  • CISA has confirmed exploitation in the wild (Feb 10, 2022). Remediation deadline for US federal agencies: Aug 10, 2022.
  • A ready-made attack module is public (Metasploit, Nuclei); exploiting it takes no special expertise.
  • Probability of exploitation in the next 30 days: 98.3% (FIRST EPSS); higher than 99.9% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: org.jenkins-ci.main:jenkins-core (Maven) 2.154, 2.138.4; jenkins (Red Hat:openshift:3.11::el7) 0:2.138.4.1544416383-1.el7.

Patch today or shut off access. Upgrade to org.jenkins-ci.main:jenkins-core (Maven) 2.154, 2.138.4; jenkins (Red Hat:openshift:3.11::el7) 0:2.138.4.1544416383-1.el7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

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.

Published
Dec 10, 2018
Updated
Jun 16, 2026
EPSS
98.3% · 99th percentile

Report tools

JSON

Action score

98

Now

Patch today or shut off access.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
30 / 30 · Listed
EPSS
29 / 30 · 98.3%

CISA SSVC decision

Exploitation
active
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Feb 10, 2022. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Aug 10, 2022.

Get told when this record changes

  • In CISA KEV: exploitation in the wild confirmed
  • Weaponized exploit exists
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2018-1000861

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Your free account also gets you

  • CVE alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for jenkins records
Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
jenkinsjenkins
redhatopenshift container platform

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • jenkins jenkinsup to 2.138.3 inclusive
  • jenkins jenkinsup to 2.153 inclusive
  • redhat openshift container platform3.11

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Mavenorg.jenkins-ci.main:jenkins-corefrom 2.140 · before 2.1542.154
Mavenorg.jenkins-ci.main:jenkins-corebefore 2.138.42.138.4
Red Hat:openshift:3.11::el7jenkinsbefore 0:2.138.4.1544416383-1.el70:2.138.4.1544416383-1.el7

Same product

jenkins: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-23897Jenkins 2.441 and earlier, LTS 2.426.2 and earlier does not disable a feature of its CLI command parser that replaces an '@' character…KEV
    99Now
  • CVE-2017-1000353Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an unauthenticated remote code execution.KEV
    99Now
  • CVE-2016-9299The remoting module in Jenkins before 2.32 and LTS before 2.19.3 allows remote attackers to execute arbitrary code via a crafted serialized…
    68This week

Published before and after this one in the same product

  • ← EarlierCVE-2018-1999046Aug 23, 2018 · A exposure of sensitive information vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in Computer.java that allows…
    17Monitor
  • ← EarlierCVE-2018-1999047Aug 23, 2018 · A improper authorization vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in UpdateCenter.java that allows attackers…
    26Monitor
  • Later →CVE-2018-1000862Dec 10, 2018 · An information exposure vulnerability exists in Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in DirectoryBrowserSupport.java that…
    17Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Maven:org.jenkins-ci.main:jenkins-core2.138.4Package registry (OSV)
Maven:org.jenkins-ci.main:jenkins-core2.154Package registry (OSV)
red hat:jenkins0:2.138.4.1544416383-1.el7 · Red Hat:openshift:3.11::el7Package registry (OSV)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1
  • Nuclei detection template ×1
  • Proof-of-concept repository on GitHub ×3

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHub3 repositories2019-04-24 → 2026-10-08
Metasploit moduleexploit/multi/http/jenkins_metaprogrammingJenkins ACL Bypass and Metaprogramming RCEexploit2019-01-08
Nuclei detection templateNuclei template CVE-2018-1000861 —

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Metasploit+29 d
  3. First PoC+135 d
  4. CISA KEV+1158 d
  5. TodayNov 14, 2026+2896 d

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-502 · Deserialization of Untrusted Data

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

Data received over the network is deserialized into the language’s native object format without verifying its source. Code paths inside the object can be triggered during deserialization.

The bug in code

The whole CWE-502 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

python
payload = sock.recv(65536)job = pickle.loads(payload)

Fixed

python
payload = sock.recv(65536)if not hmac.compare_digest(sign(payload), header_sig):    raise PermissionError("invalid signature")job = JobSchema.validate(json.loads(payload))

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records