JenkinsApplication
CVE-2020-2222
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 · uneditedJenkins 2.244 and earlier, LTS 2.235.1 and earlier does not escape the job name in the 'Keep this build forever' badge tooltip, resulting in a stored cross-site scripting vulnerability.
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 confidenceJenkins versions 2.244 and earlier fail to escape job names in the 'Keep this build forever' badge tooltip, allowing stored malicious scripts to execute when users view this tooltip. This is a stored cross-site scripting (XSS) vulnerability requiring the victim to interact with the poisoned badge.
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
JenkinsApplication
<= 2.235.1<= 2.244CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Check Jenkins versionGo to Manage Jenkins > About Jenkins, or run 'java -jar jenkins.war --version' from the server consoleAffected if Version is 2.244 or earlier, or LTS 2.235.1 or earlier
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Identify Keep Forever badges in useSearch build records for builds with the keep-forever flag enabled. In Jenkins, this appears as a trophy icon labeled 'Keep this build forever' on build pagesAffected if Any builds have the Keep this build forever badge applied
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Review job names for XSS contentList all job names in Jenkins (via UI or API at /api/json?tree=jobs[name]) and inspect for unsanitized HTML/JavaScript characters such as <, >, script, javascript:, onerror=, or similar XSS patternsAffected if Any job name contains unsanitized script injection content that would execute when rendered in the badge tooltip
You are affected if your Jenkins version is 2.244 or earlier (or 2.235.1 or earlier), AND you have builds with Keep this build forever badges, AND those builds belong to jobs with malicious script content embedded in the job name.
Generated from the published advisory. Verify against your own configuration.
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 dataUpgrade Jenkins to version 2.245 or later (LTS 2.235.2 or later) which properly escapes job names in the badge tooltip.
Fix this in Jenkins
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-2222 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2020-2222 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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