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Active ChoicesApplication · Jenkins

CVE-2020-2290

MEDIUM · 5.4 CVSS v3.1 Published 2020-10-08
Fix available
A fix is available. Upgrade to after 2.4 or later.
See remediation →
58/100
Remediation priority · Elevated
Remotely reachable

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Jenkins Active Choices Plugin 2.4 and earlier does not escape some return values of sandboxed scripts for Reactive Reference Parameters, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

The Jenkins Active Choices Plugin versions 2.4 and earlier fails to properly escape certain return values from sandboxed scripts in Reactive Reference Parameters, allowing stored XSS. Attackers with Job/Configure permission can inject malicious scripts that execute when other users view the affected configuration.

MitigationUpdate Jenkins Active Choices Plugin to version 2.5 or later which contains the fix for proper escaping of sandboxed script return values.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Active ChoicesApplication
Affected:<= 2.4

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Active Choices Plugin version
    In Jenkins, go to Manage Jenkins > Manage Plugins > Installed and search for Active Choices Plugin to view its version, or query the plugin via Jenkins CLI: jenkins-plugin-cli --plugins active-chices:2.4
    Affected if The installed version is 2.4 or earlier
  2. Locate jobs using Reactive Reference Parameters
    Review job configurations: for each job, go to Configure > Parameters and check if any parameter type is set to Reactive Reference Parameter from the Active Choices plugin
    Affected if Any job has a Reactive Reference Parameter configured
  3. Inspect sandboxed script configuration
    In the job configuration, expand the Reactive Reference Parameter and check if the Groovy script is configured to Run within sandbox (sandbox checkbox enabled)
    Affected if Sandboxed scripts are enabled in the Reactive Reference Parameter configuration

You are affected if the Active Choices Plugin version is 2.4 or earlier AND any job uses Reactive Reference Parameters with sandboxed Groovy scripts.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to a release after 2.4
Interim mitigation

Update Jenkins Active Choices Plugin to version 2.5 or later which contains the fix for proper escaping of sandboxed script return values.

Fix this in Active Choices Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,190
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,904.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2020-2290 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data