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HIGH severity

Missing permission checks in Jenkins Chef Sinatra Plugin allow XXEGHSA-fq56-c7rj-j3j9

HIGH

GHSA-fq56-c7rj-j3j9 is a high-severity (CVSS 8.8) CWE-862 vulnerability in org.jenkins-ci.plugins:sinatra-chef-builder. No vendor fix is recorded yet; mitigation options are listed below.

Also known asCVE-2022-25208
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Oct 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs65th percentile — riskier than 65% of all scored CVEsHighest risk
0.00%0.53%1.06%1.60%0.1%1.1%Apr 26Aug 26Oct 26

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

How urgent is this, really

GHSA-fq56-c7rj-j3j9 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
☕org.jenkins-ci.plugins:sinatra-chef-builder

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 Chef Sinatra Plugin 1.20 and earlier does not perform a permission check in a method implementing form validation.

This allows attackers with Overall/Read permission to have Jenkins send an HTTP request to an attacker-controlled URL and have it parse the response as XML.

As the plugin does not configure its XML parser to prevent XML external entity (XXE) attacks, attackers can have Jenkins parse a crafted XML response that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery.

Additionally, this form validation method does not require POST requests, resulting in a cross-site request forgery (CSRF) vulnerability.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:sinatra-chef-builderall versionsNo fix

Affected Products

1 product · 1 configurations
Application
chef sinatrajenkins
≤ 1.20
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:sinatra-chef-builder, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    No patched version of org.jenkins-ci.plugins:sinatra-chef-builder has shipped for GHSA-fq56-c7rj-j3j9 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

  3. Mitigate without a patch

    Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.

Frequently Asked Questions

Jenkins Chef Sinatra Plugin 1.20 and earlier does not perform a permission check in a method implementing form validation. This allows attackers with Overall/Read permission to have Jenkins send an HTTP request to an attacker-controlled URL and have it parse the response as XML. As the plugin does not configure its XML parser to prevent XML external entity (XXE) attacks, attackers can have Jenkins parse a crafted XML response that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery. Additionally, this form validation method does not re
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