CVE-2025-13465: The _.unset and _.omit functions in Lodash are vulnerable to prototype pollution

Q: How do I fix CVE-2025-13465?

lodash: upgrade to 4.17.23. Exact commands for each OS are on this page.

Q: Is CVE-2025-13465 being exploited?

CVE-2025-13465 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-13465 affect?

CVE-2025-13465 affects lodash. Severity is medium (CVSS 5.3). 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 ov

Q: How urgent is CVE-2025-13465?

Priority 43/100. Remotely exploitable, no login, no user action

This month

MEDIUM 5.3REMOTEUPGRADE

CVE-2025-13465 is a medium-severity flaw (CVSS 5.3) affecting lodash. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.8% (top 21%)
CISA exploited list	No
Weakness	CWE-1321
Published	2026-01-21
Last modified	2026-10-15

Publisher (CNA): openjs · Vendor: lodash

Last updated 2026-10-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-21 20:16 UTCPublished CVE record published
2026-10-15 07:17 UTCUpdated Record last modified

lodash lodash UPGRADE

Affected: >= 4.0.0 and < 4.17.23

Fixed in: 4.17.23

Safe to downgrade to: a release before 4.0.0

1. Check installed version

npm ls lodash

2. UPGRADE to 4.17.23

npm install lodash@">=4.17.23"

3. If no update is available yet, DOWNGRADE to a release before 4.0.0

npm view lodash versions npm install lodash@"<4.0.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Advisories and coverage

Official advisories

AlmaLinux Errata: [ALSA-2026:18868] Important: linux-sgx security update 2026-05-26

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-13465?

lodash: upgrade to 4.17.23. Exact commands for each OS are on this page.

Is CVE-2025-13465 being exploited?

CVE-2025-13465 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-13465 affect?

CVE-2025-13465 affects lodash. Severity is medium (CVSS 5.3). 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 ov

How urgent is CVE-2025-13465?

Priority 43/100. Remotely exploitable, no login, no user action

Software pages

AMD vulnerabilities · Lodash vulnerabilities

References

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