CVE-2023-32993Network attack vector

Metadata interception via missing hostname validation

Published May 16, 2023 · Updated Jan 23, 2025

Missing hostname validation in Jenkins SAML Single Sign On(SSO) Plugin 2.0.2 and earlier allows man-in-the-middle attackers to intercept metadata. The plugin's metadata retrieval connections do not compare the TLS certificate hostname with the miniOrange or configured IdP host. Exploitation requires a network position capable of intercepting those outbound connections and exposes the retrieved SAML metadata.

CVSS severity4.8
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing hostname validation in Jenkins SAML Single Sign On(SSO) Plugin 2.0.2 and earlier allows man-in-the-middle attackers to intercept metadata. The plugin's metadata retrieval connections do not compare the TLS certificate hostname with the miniOrange or configured IdP host. Exploitation requires a network position capable of intercepting those outbound connections and exposes the retrieved SAML metadata.

The record

CVE
CVE-2023-32993
Published
May 16, 2023
Updated
Jan 23, 2025
Vendor
Jenkins Project
Product
SAML Single Sign On(SSO) Plugin
Classifications
CWE-345, CWE-346, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jenkins Project · SAML Single Sign On(SSO) Pluginversion=0 <=2.0.2

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-345Insufficient Verification of Data Authenticity
CWE-346Origin Validation Error
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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