Medium severity6.5NVD Advisory· Published Jun 7, 2018· Updated Jun 17, 2026
CVE-2018-3721
CVE-2018-3721
Description
lodash node module before 4.17.5 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability via defaultsDeep, merge, and mergeWith functions, which allows a malicious user to modify the prototype of "Object" via __proto__, causing the addition or modification of an existing property that will exist on all objects.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
lodashnpm | < 4.17.5 | 4.17.5 |
lodash-railsRubyGems | < 4.17.5 | 4.17.5 |
Affected products
3- ghsa-coords2 versions
< 4.17.5+ 1 more
- (no CPE)range: < 4.17.5
- (no CPE)range: < 4.17.5
- HackerOne/lodash node modulev5Range: Versions before 4.17.5
Patches
Vulnerability mechanics
References
7- github.com/lodash/lodash/commit/d8e069cc3410082e44eb18fcf8e7f3d08ebe1d4anvdPatchWEB
- hackerone.com/reports/310443nvdExploitThird Party AdvisoryWEB
- github.com/advisories/GHSA-fvqr-27wr-82fmghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2018-3721ghsaADVISORY
- security.netapp.com/advisory/ntap-20190919-0004/nvdThird Party Advisory
- github.com/rubysec/ruby-advisory-db/blob/master/gems/lodash-rails/CVE-2018-3721.ymlghsaWEB
- security.netapp.com/advisory/ntap-20190919-0004ghsaWEB
News mentions
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