How severe is CVE-2017-1000402?

CVE-2017-1000402 has a CVSS score of 5.9/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2017-1000402?

CVE-2017-1000402 affects the following packages: org.jenkins-ci.plugins:swarm-client (Maven), org.jvnet.hudson.plugins:swarm-plugin (Maven). Ecosystems affected: Maven.

How do I fix CVE-2017-1000402?

Update org.jenkins-ci.plugins:swarm-client to 3.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-1000402 is resolved across your whole dependency graph.

How do I detect CVE-2017-1000402 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jenkins-ci.plugins:swarm-client, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2017-1000402 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2017-1000402 actively exploited in the wild?

No public exploit code has been indexed for CVE-2017-1000402 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2017-1000402?

CVE-2017-1000402 has an EPSS (Exploit Prediction Scoring System) score of 0.5%, placing it in the 42th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2017-1000402?

CVE-2017-1000402 is classified as Improper Input Validation (CWE-20). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2017-1000402 published, and has it been updated?

CVE-2017-1000402 was published on January 26, 2018 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

MEDIUM severity

CVE-2017-1000402 — swarm-client

MEDIUM

CVE-2017-1000402 is a medium-severity (CVSS 5.9) Improper Input Validation vulnerability in org.jenkins-ci.plugins:swarm-client. A fix is available for org.jenkins-ci.plugins:swarm-client — see the affected versions and patch details below.

Jenkins Swarm Plugin Client vulnerable to man-in-the-middle attacks

Also known asGHSA-pj45-8vhc-mh2f

Published

Jan 26, 2018

Updated

Oct 24, 2026

Affected

2 pkgs

Patched

1 / 2

Exploits

None indexed

Exploitation data as of Oct 31, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

0.5%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs42th percentile — riskier than 42% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

2 pkgs affected

☕org.jenkins-ci.plugins:swarm-client☕org.jvnet.hudson.plugins:swarm-plugin

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Jenkins Swarm Plugin Client 3.4 and earlier bundled a version of the commons-httpclient library with the vulnerability CVE-2012-6153 that incorrectly verified SSL certificates, making it susceptible to man-in-the-middle attacks.

Affected Packages

2 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.jenkins-ci.plugins:swarm-client`	all versions	3.5`org.jenkins-ci.plugins:swarm-client:3.5`
☕Maven	`org.jvnet.hudson.plugins:swarm-plugin`	all versions	No fix

Affected Products

1 product · 1 configurations

Application

swarmjenkins

≤ 3.4

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jenkins-ci.plugins:swarm-client, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.jenkins-ci.plugins:swarm-client to 3.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-1000402 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2017-1000402 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

5.9/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Raw vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CWE Classification

CWE-20Improper Input Validation

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

Jan 26, 2018

Last updated

Oct 24, 2026

Identifiers

CVE-2017-1000402

GHSA-pj45-8vhc-mh2f

References

Advisoryjenkins.io · 2017 10 11 Advisorynvd.nist.gov · CVE 2017 1000402 Webjenkins.io · 2017 10 11

Related vulnerabilities

This CVE is medium severity; 6 of 8 other CVEs with CWE-20 are rated as high or higher (top: critical).

CVE-2026-44265CVE-2026-119280CVE-2026-96631CVE-2026-119210CVE-2026-59978GHSA-c33x-vcv4-vg3gCVE-2026-115915CVE-2026-115905Browse all CWE-20

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 24, 2026

CVE-2017-1000402 — swarm-client

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2017-1000402 in your dependencies?