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Vulnerability · CVE-2025-13465

The _.unset and _.omit functions in Lodash are vulnerable to prototype pollution.

Published Jan 21, 2026 · corrected/updated Oct 17, 2026 · Red Hat lodash · evidence confidence high

The _.unset and _.omit functions in Lodash are vulnerable to prototype pollution. An attacker can pass crafted paths which cause Lodash to delete methods from global prototypes. The issue permits deletion of properties but does not allow overwriting their original behavior. The issue is patched from 4.17.23 to 4.18.0 depending on the package: lodash, lodash-es, and lodash-amd in 4.17.23, and the standalone lodash.unset and lodash.omit packages in 4.18.0.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2025-13465 is a high public vulnerability record for Red Hat lodash. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether Red Hat lodash is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: lodash/lodash; lodash (4.0.0 → 4.17.23); lodash-amd (4.0.0 → 4.17.23); lodash-es (4.0.0 → 4.17.23). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 8.2, EPSS 1.8%. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-1321. Sources contributing to this record: csaf, cve_org, epss, github. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 21, 2026 · NIST NVD

    Detected

    The _.unset and _.omit functions in Lodash are vulnerable to prototype pollution. An attacker can pass crafted paths which cause Lodash to delete methods from global prototypes. The issue permits deletion of properties but does not allow overwriting their original behavior. The issue is patched from 4.17.23 to 4.18.0 depending on the package: lodash, lodash-es, and lodash-amd in 4.17.23, and the s

  2. Oct 15, 2026 · NIST NVD

    Updated

    The _.unset and _.omit functions in Lodash are vulnerable to prototype pollution. An attacker can pass crafted paths which cause Lodash to delete methods from global prototypes. The issue permits deletion of properties but does not allow overwriting their original behavior. The issue is patched from 4.17.23 to 4.18.0 depending on the package: lodash, lodash-es, and lodash-amd in 4.17.23, and the s

  3. Oct 17, 2026 · GitHub Advisory Database

    Fix available

    lodash fixed in 4.17.23; lodash-es fixed in 4.17.23; lodash-amd fixed in 4.17.23

  4. Oct 17, 2026 · GitHub Advisory Database

    Fix available

    lodash fixed in 4.17.23

  5. Oct 17, 2026 · GitHub Advisory Database

    Fix available

    lodash.unset fixed in 4.5.2

  6. Oct 17, 2026 · GitHub Advisory Database

    Fix available

    lodash-es fixed in 4.17.23

  7. Oct 17, 2026 · GitHub Advisory Database

    Fix available

    lodash-amd fixed in 4.17.23

  8. Oct 17, 2026 · GitHub Advisory Database

    Updated

    ### Impact Lodash versions 4.0.0 through 4.17.22 are vulnerable to prototype pollution in the and functions. An attacker can pass crafted paths which cause Lodash to delete methods from global prototypes. The issue permits deletion of properties but does not allow overwriting their original behavior. ### Patches This issue is patched on 4.17.23.

Affected

  • cpe lodash/lodashversion unspecified
  • npm lodash4.0.0 → 4.17.23
  • npm lodash-amd4.0.0 → 4.17.23
  • npm lodash-es4.0.0 → 4.17.23
  • npm lodash.unset4.0.0 → 4.5.2

Sources

  • CSAF AdvisoriesVendor advisoryRHSA-2026:9848:CVE-2025-13465

    A flaw was found in Lodash. A prototype pollution vulnerability in the _.unset and _.omit functions allows an attacker able to control property paths to delete methods from global prototypes. By removing essential functionalities, this can result in a denial of service.

    security.access.redhat.com
  • CVE.orgVulnerability recordCVE-2025-13465

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-13465

    30-day exploitation probability 1.8%

    first.org
  • GitHub Advisory DatabasePackage advisoryGHSA-xxjr-mmjv-4gpg

    GitHub Advisory Database record mirrored by OSV.

    github.com
  • NIST NVDVulnerability recordCVE-2025-13465

    The _.unset and _.omit functions in Lodash are vulnerable to prototype pollution. An attacker can pass crafted paths which cause Lodash to delete methods from global prototypes. The issue permits deletion of properties but does not allow overwriting their original behavior. The i

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryGHSA-xxjr-mmjv-4gpg

    Lodash has Prototype Pollution Vulnerability in and functions

    osv.dev

References