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Not in CISA KEV
MEDIUM severity

CVE-2021-21675 — requests

MEDIUM

CVE-2021-21675 is a medium-severity (CVSS 6.5) Cross-Site Request Forgery (CSRF) vulnerability in org.jenkins-ci.plugins:requests. A fix is available for org.jenkins-ci.plugins:requests — see the affected versions and patch details below.

CSRF vulnerabilities in Jenkins requests-plugin Plugin

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs70th percentile — riskier than 70% of all scored CVEsHighest risk
0.00%0.59%1.17%1.76%0.6%1.3%May 26Sep 26Nov 26

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

1 pkg affected
☕org.jenkins-ci.plugins:requests

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 requests-plugin Plugin 2.2.12 and earlier does not require POST requests to request and apply changes, resulting in cross-site request forgery (CSRF) vulnerabilities.

These vulnerabilities allow attackers to create requests and/or have administrators apply pending requests, like renaming or deleting jobs, deleting builds, etc.

Jenkins requests-plugin Plugin 2.2.13 requires POST requests for the affected HTTP endpoints. This was partially fixed in requests-plugin Plugin 2.2.8 to require POST requests for some of the affected HTTP endpoints, but the endpoint allowing administrators to apply pending requests remained unprotected until 2.2.13.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:requestsall versions2.2.13org.jenkins-ci.plugins:requests:2.2.13

Affected Products

1 product · 1 configurations
Application
requestsjenkins
≤ 2.2.12
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update org.jenkins-ci.plugins:requests to 2.2.13 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-21675 is resolved across your whole dependency graph.

  3. 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

Jenkins requests-plugin Plugin 2.2.12 and earlier does not require POST requests to request and apply changes, resulting in cross-site request forgery (CSRF) vulnerabilities. These vulnerabilities allow attackers to create requests and/or have administrators apply pending requests, like renaming or deleting jobs, deleting builds, etc. Jenkins requests-plugin Plugin 2.2.13 requires POST requests for the affected HTTP endpoints. This was partially fixed in requests-plugin Plugin 2.2.8 to require POST requests for some of the affected HTTP endpoints, but the endpoint allowing administrators to
O3 Security · Impact-Aware SCA

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CVE-2021-21675: requests CSRF — Fixed in 2.2.13