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CVE Record

CVE-2026-24888: Maker.js Vulnerable to Unsafe Property Copying in makerjs.extendObject

Maker.js is a 2D vector line drawing and shape modeling for CNC and laser cutters. In versions up to and including 0.19.1, the `makerjs.extendObject` function copies properties from source objects without proper validation, potentially exposing applications to security risks. The function lacks `hasOwnProperty()` checks and does not filter dangerous keys, allowing inherited properties and potentially malicious properties to be copied to target objects. A patch is available in commit 85e0f12bd868974b891601a141974f929dec36b8, which is expected to be part of version 0.19.2.

MediumCVSS 6.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Maker.js versions up to 0.19.1 can copy unsafe object properties during normal object merging. If an application passes untrusted data into this function, attackers may influence application data or behavior. The reported impact is limited confidentiality and integrity, with no availability impact stated.

Executive priority

Treat as a moderate-priority dependency fix. Prioritize internet-facing or customer-data-processing applications using Maker.js, but it is not currently supported by public evidence of active exploitation.

Technical view

CVE-2026-24888 affects makerjs.extendObject in Microsoft Maker.js <=0.19.1. The function copies source properties without hasOwnProperty checks and does not filter dangerous keys, allowing inherited or malicious properties to be copied. The issue is classified as CWE-1321 and has CVSS 6.5.

Likely exposure

Exposure is most likely in Node.js or browser applications using Maker.js <=0.19.1, especially where user-controlled objects reach makerjs.extendObject or related model-processing paths.

Exploitation context

No active exploitation is stated in the provided sources, and the CVE is not marked KEV. Practical risk depends on whether applications pass attacker-influenced objects into the affected property-copying function.

Researcher notes

The vulnerable pattern is unsafe property copying in makerjs.extendObject. Sources identify missing own-property validation and dangerous-key filtering. The patch reference is available, but version 0.19.2 is described as expected, so confirm actual release status before closing remediation.

Mitigation direction

  • Inventory applications and packages for Maker.js versions <=0.19.1.
  • Review vendor advisory and the referenced patch commit.
  • Upgrade to the fixed Maker.js release when available.
  • If appropriate, apply the vendor patch commit through normal dependency controls.
  • Avoid passing untrusted objects into makerjs.extendObject until remediated.

Validation and detection

  • Check dependency manifests and lockfiles for Maker.js version usage.
  • Confirm whether the deployed package includes commit 85e0f12bd868974b891601a141974f929dec36b8.
  • Review code paths where external input may become source objects.
  • Prioritize systems that process uploaded or user-supplied drawing/model data.
  • Document compensating controls if immediate upgrade is not possible.
Prepared
Confidence
high
Sources
5

Public sources used

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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-1321: Exact CWE lookup

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cve · low confidence lookup

CVE-2026-24888 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.5 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.5CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N3.92.5Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.5Medium
CVSS 3.1 vector shape for CVE-2026-24888Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
microsoftmaker.js<= 0.19.1Listed
Weakness

CWE details

CWE-1321

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-1321 · source CWE mapping

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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