CVE-2026-2950 (GCVE-0-2026-2950)

Vulnerability from cvelistv5 – Published: 2026-03-31 19:18 – Updated: 2026-04-01 13:43
VLAI
Title
lodash vulnerable to Prototype Pollution via array path bypass in `_.unset` and `_.omit`
Summary
Impact: Lodash versions 4.17.23 and earlier are vulnerable to prototype pollution in the _.unset and _.omit functions. The fix for (CVE-2025-13465: https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg) only guards against string key members, so an attacker can bypass the check by passing array-wrapped path segments. This allows deletion of properties from built-in prototypes such as Object.prototype, Number.prototype, and String.prototype. The issue permits deletion of prototype properties but does not allow overwriting their original behavior. Patches: This issue is patched in 4.18.0. Workarounds: None. Upgrade to the patched version.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
Impacted products
Vendor Product Version
lodash lodash Affected: 4.17.23 , < 4.18.0 (semver)
Unaffected: 4.18.0 (semver)
Create a notification for this product.
lodash lodash-es Affected: 4.17.23 , < 4.18.0 (semver)
Unaffected: 4.18.0 (semver)
Create a notification for this product.
lodash lodash-amd Affected: 4.17.23 , < 4.18.0 (semver)
Unaffected: 4.18.0 (semver)
Create a notification for this product.
lodash lodash.unset Affected: 4.0.0 , < 4.18.0 (semver)
Unaffected: 4.18.0 (semver)
Create a notification for this product.
Credits
Haruna38 shpik-kr maru1009 ott3r07 zolbooo backuardo falsyvalues jonchurch jdalton UlisesGascon
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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