CVE-2021-21633Network attack vector

Stored credential theft via CSRF-triggered outbound requests

Published Mar 30, 2021 · Updated Nov 19, 2024

CSRF in Jenkins OWASP Dependency-Track Plugin 3.1.0 and earlier allows remote attackers to capture stored credentials via crafted requests. Several HTTP endpoints accept non-POST requests and connect to an attacker-specified URL with either a supplied credential ID or the configured global credential. Exploitation requires a Jenkins user's browser to submit the request; the outbound connection exposes Secret text credentials to the attacker-controlled service.

CVSS severity8.8
High
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in Jenkins OWASP Dependency-Track Plugin 3.1.0 and earlier allows remote attackers to capture stored credentials via crafted requests. Several HTTP endpoints accept non-POST requests and connect to an attacker-specified URL with either a supplied credential ID or the configured global credential. Exploitation requires a Jenkins user's browser to submit the request; the outbound connection exposes Secret text credentials to the attacker-controlled service.

The record

CVE
CVE-2021-21633
Published
Mar 30, 2021
Updated
Nov 19, 2024
Vendor
Jenkins Project
Product
OWASP Dependency-Track Jenkins Plugin
Classifications
CWE-352, T1555
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 30, 2021CVE publishedPublication date reported by the CVE source.
  2. Nov 19, 2024Record 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=1.1.0 <unspecified
  2. Affected versionversion=unspecified <=3.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jenkins Project · OWASP Dependency-Track Jenkins Pluginversion=1.1.0 <unspecified; version=unspecified <=3.1.0

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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-352Cross-Site Request Forgery (CSRF)
T1555Credentials from Password Stores

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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