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CVE Record

CVE-2019-10744: Versions of lodash lower than 4.17.12 are vulnerable to Prototype Pollution.

Versions of lodash lower than 4.17.12 are vulnerable to Prototype Pollution. The function defaultsDeep could be tricked into adding or modifying properties of Object.prototype using a constructor payload.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Lodash is a widely used JavaScript utility library. Versions before 4.17.12 could let unsafe object input change shared JavaScript object behavior. Business impact depends on where lodash is used, but exposure can hide in transitive dependencies and embedded vendor products.

Executive priority

Treat as a dependency hygiene and exposure-reduction item. Prioritize internet-facing applications, products handling untrusted JSON, and vendor platforms named in advisories. Lack of cited active exploitation lowers emergency urgency, but old lodash versions should be remediated.

Technical view

CVE-2019-10744 is prototype pollution in lodash versions lower than 4.17.12. The vulnerable defaultsDeep function could be tricked into adding or modifying Object.prototype through a constructor payload. Impact depends on whether polluted properties influence application logic, configuration, or security decisions.

Likely exposure

Organizations may be exposed through Node.js or browser JavaScript applications using lodash below 4.17.12, including transitive dependencies. Vendor advisories from Red Hat, Oracle, NetApp, and F5 indicate possible downstream product exposure.

Exploitation context

The provided sources do not show active exploitation, and KEV is false. Practical exploitability depends on attacker-controlled object data reaching defaultsDeep or a wrapper around it. The bundle identifies the payload class but does not provide exploitation evidence.

Researcher notes

Focus validation on whether attacker-controlled structured input can reach lodash defaultsDeep before upgrade. Do not assume impact from version presence alone; prototype pollution usually requires a reachable data-flow and a sensitive polluted-property sink.

Mitigation direction

  • Upgrade lodash to version 4.17.12 or later.
  • Update lockfiles and rebuild applications using bundled JavaScript dependencies.
  • Review vendor advisories for appliances or platforms embedding lodash.
  • If upgrading is blocked, follow vendor-specific mitigation guidance.

Validation and detection

  • Inventory direct and transitive lodash versions in application dependency manifests.
  • Confirm production bundles no longer include lodash below 4.17.12.
  • Check SCA results for CVE-2019-10744 across repositories and images.
  • Review code paths where untrusted object input reaches defaultsDeep.
Prepared
Confidence
high
Sources
8

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

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CVE-2019-10744 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
0Timeline events
0ADP providers
7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
SnyklodashAll versions prior to 4.17.12Listed
Weakness

CWE details

No CWE listed

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