CVE-2024-23076: JFreeChart v1.5.4 was discovered to contain a NullPointerException via the component /labels/BubbleXYItemLa...
JFreeChart v1.5.4 was discovered to contain a NullPointerException via the component /labels/BubbleXYItemLabelGenerator.java. NOTE: this is disputed by multiple third parties who believe there was not reasonable evidence to determine the existence of a vulnerability. The submission may have been based on a tool that is not sufficiently robust for vulnerability identification.
Security readout for executives and security teams
Plain-English summary
This CVE reports a possible denial-of-service issue in JFreeChart 1.5.4 involving a NullPointerException in BubbleXYItemLabelGenerator. The record says the finding is disputed by multiple third parties and may be based on weak automated analysis. Treat it as an inventory and validation item, not a confirmed emergency, unless vendor or runtime evidence supports impact.
Executive priority
Medium-low unless a business-critical, externally reachable application uses the named JFreeChart component. The CVSS score is high, but the vulnerability existence is disputed and evidence in the bundle is incomplete.
Technical view
The record maps to CWE-476 and CVSS 3.1 score 7.5, implying an availability-only impact. No affected CPEs are supplied; affected vendor and product are listed as n/a. The only component named is /labels/BubbleXYItemLabelGenerator.java in JFreeChart v1.5.4.
Likely exposure
Exposure is limited to applications that bundle or depend on JFreeChart 1.5.4 and use the named label generator path. The source bundle does not identify affected downstream products, deployment patterns, or reachable attack surfaces.
Exploitation context
The bundle does not cite active exploitation, public weaponization, or KEV listing. The CVE record notes the vulnerability claim is disputed, so exploitation assumptions should not be made without application-specific evidence.
Researcher notes
Focus on proving reachability and impact rather than assuming the CVE is valid. The record has no CPEs and no confirmed vendor fix in the provided sources. Avoid escalating beyond availability risk unless independent evidence supports it.
Mitigation direction
Inventory applications and libraries for JFreeChart 1.5.4 usage.
Check JFreeChart project guidance and release notes before applying any version change.
Prioritize applications where chart rendering is exposed to untrusted input.
Add monitoring for repeated chart-rendering failures or availability degradation.
Validation and detection
Confirm whether JFreeChart 1.5.4 is present in production dependency manifests.
Identify any use of BubbleXYItemLabelGenerator in reachable code paths.
Review application logs for NullPointerException patterns in chart label generation.
Record that the CVE is disputed when reporting exposure status.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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cwe · low confidence lookup
CWE-476: Exact CWE lookup
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CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-476 · source CWE mapping
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.