Is CVE-2015-5317 (Jenkins User Interface (UI) Information Disclosure) being exploited in the wild?

By NHI Mgmt Group Editorial Team Updated October 19, 2026 Domain: Threats, Abuse & Incident Response

Yes. CISA added CVE-2015-5317 to its Known Exploited Vulnerabilities catalogue on 12 May 2023, which it does only when there is reliable evidence of active exploitation. CISA has not linked it to known ransomware campaigns. Jenkins User Interface (UI) contains an information disclosure vulnerability that allows users to see the names of jobs and builds otherwise inaccessible to them on the "Fingerprints" pages.

What CVE-2015-5317 Means for Jenkins Exposure

CVE-2015-5317 is not about remote code execution or credential theft. It is an information disclosure issue in Jenkins UI that can reveal the names of jobs and builds through the Fingerprints pages, so the practical question is whether your Jenkins instance exposes metadata that should remain hidden from some users.

That matters because disclosure bugs often become reconnaissance enablers. Even when the content is not obviously sensitive, job names, build histories, and related metadata can map internal projects, release cadence, incident work, or private integrations. If an environment is shared across teams or tenants, that visibility can be operationally meaningful.

For a broader response playbook on confirmed exploitation and KEV-driven triage, use the CISA Known Exploited Vulnerabilities Catalog and the NIST National Vulnerability Database as the authoritative references for vulnerability records and prioritisation context.

How to Confirm Whether the Disclosure Is Reachable

The first check is simple: determine who can reach the affected Fingerprints pages and what they can see without elevated access. In Jenkins, that means validating both the authentication boundary and the authorisation boundary, because disclosure often appears only when a user has just enough access to browse the UI but not enough to see the underlying build context.

Confirm whether the page is reachable by anonymous users, standard authenticated users, contractors, or cross-tenant operators. Then compare the visible job and build names against your intended visibility model. If the names themselves disclose project code names, customer identifiers, or internal operational details, treat the issue as more than a cosmetic leak.

If you want a structured way to place this issue in a broader pipeline-security context, the CI/CD Security Guide is the most direct internal reference for Jenkins-related pipeline exposure, while the Vulnerability Management Guide helps with KEV triage, exception handling, and remediation tracking.

What to Do If You Cannot Patch Immediately

If patching or upgrading Jenkins must wait, reduce exposure by narrowing who can reach the affected pages, tightening role assignments, and reviewing whether the UI exposure is reachable through reverse proxies, federated access paths, or shared administration accounts. The goal is to remove unnecessary visibility, not just to block one obvious URL.

Also check whether the disclosed names expose information that can help an attacker enumerate internal systems, infer release windows, or target high-value repositories. If the answer is yes, the compensating control is not only access restriction, but also a review of adjacent attack paths that may still reveal the same data elsewhere in the environment.

Where you need a precedent for how disclosed metadata can support broader compromise, the Homebrew GitHub token exposure 2018 case shows why Jenkins-adjacent leakage deserves operational attention even when the original defect is not a full system compromise.

Standards & Framework Alignment

This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.

MITRE ATT&CK addresses the attack and risk surface, while NIST CSF 2.0, NIST SP 800-53 Rev 5, CIS Controls v8 and OWASP ASVS set the governance and control requirements practitioners need to meet.

Framework	Control / Reference	Relevance
NIST CSF 2.0	ID.RA-01 — Asset Vulnerability Identification	Jenkins disclosure needs exposure identification and prioritisation.
Recommendation — Identify reachable Jenkins exposure and rank it for remediation.
NIST SP 800-53 Rev 5	AC-6 — Least Privilege	Restricting visibility requires limiting who can browse sensitive Jenkins pages.
	AU-2 — Event Logging	Access to sensitive UI pages should be logged for investigation and validation.
Recommendation — Limit Jenkins page access to only the users who need it. Log access to Jenkins pages that expose build metadata.
CIS Controls v8	CIS-6 — Access Control Management	UI disclosure is reduced by managing who can access Jenkins functions and pages.
Recommendation — Restrict Jenkins access paths to approved users and roles.
OWASP ASVS	V8 — Authorization	The issue hinges on whether users can see data they should not be authorised to view.
Recommendation — Verify authorization checks on Jenkins UI data exposure points.
MITRE ATT&CK	T1213 — Data from Information Repositories	Attackers use exposed repository metadata and build names for reconnaissance.
Recommendation — Hunt for exposed Jenkins metadata that supports reconnaissance.

Practitioner Guidance

What to verify: Confirm whether the Fingerprints pages are exposing job and build names to any user population that should not see them, and whether that visibility is consistent with your Jenkins role model.

Decision rule: If the disclosure reveals internal project structure, customer context, or release timing, treat it as material exposure and prioritise remediation alongside other KEV-listed issues rather than deferring it as a minor UI bug.

What practitioners underestimate: The leak may look small on its own, but it can give attackers enough context to improve targeting, social engineering, or follow-on reconnaissance across your delivery pipeline.

Practitioner takeaway: For Jenkins disclosure flaws, the question is not only whether data is visible, but whether that visibility changes what an attacker can infer about your build and release environment.

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NHIMG Editorial Note
Reviewed and updated by the NHIMG editorial team on October 19, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org