CVE-2021-21675Network attack vector

Administrative changes via state-changing GET requests

Published Jun 30, 2021 · Updated Aug 3, 2024

CSRF in Jenkins Requests Plugin 2.2.12 and earlier allows remote attackers to create or apply administrative change requests. Affected HTTP endpoints accept state-changing GET requests instead of requiring POST, bypassing Jenkins request-forgery protection. Exploitation requires a Jenkins user to visit an attacker-controlled page; an administrator's session can rename or delete jobs and delete builds.

CVSS severity6.5
Medium
EPSS probability1.26%
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 Requests Plugin 2.2.12 and earlier allows remote attackers to create or apply administrative change requests. Affected HTTP endpoints accept state-changing GET requests instead of requiring POST, bypassing Jenkins request-forgery protection. Exploitation requires a Jenkins user to visit an attacker-controlled page; an administrator's session can rename or delete jobs and delete builds.

The record

CVE
CVE-2021-21675
Published
Jun 30, 2021
Updated
Aug 3, 2024
Vendor
Jenkins Project
Product
Jenkins Requests Plugin
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=unspecified <=2.2.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jenkins Project · Jenkins Requests Pluginversion=unspecified <=2.2.12

Published CVSS scores

6.5GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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.

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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)

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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