CVE-2021-3805: object-path is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pol

This week

HIGH 7.5REMOTEWATCHLISTUPGRADEMITIGATE

CVE-2021-3805 is a high-severity flaw (CVSS 7.5) affecting object-path, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

object-path is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-1321
Published	2021-09-17
Last modified	2026-06-17

Publisher (CNA): huntr.dev · Vendor: debian · object-path project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-09-17 06:15 UTCPublished CVE record published
2026-06-17 04:05 UTCUpdated Record last modified

object-path project object-path UPGRADE

Affected: < 0.11.8

Fixed in: 0.11.8

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls object-path

2. UPGRADE to 0.11.8

npm install object-path@">=0.11.8"

debian debian linux MITIGATE

Affected: 10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2021-3805?

object-path: upgrade to 0.11.8; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-3805 being exploited?

CVE-2021-3805 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-2021-3805 affect?

CVE-2021-3805 affects object-path, debian linux. Severity is high (CVSS 7.5). object-path is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

How urgent is CVE-2021-3805?

Priority 62/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Debian vulnerabilities

Related CVEs

CVE-2021-23434 MEDIUM 5.6 UPGRADE MITIGATE This affects the package object-path before 0.11.6
CVE-2020-15256 HIGH 7.7 UPGRADE A prototype pollution vulnerability has been found in `object-path` <= 0.11.4 affecting the `set()` method

References

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