CVE-2021-3805

Prototype Pollution in mariocasciaro/object-path

7.5 HighFix available

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

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

2.04%Up 1.4 points since Sep 17, 2021

What each source reports

CVE List Score used 7.5

Prototype Pollution in mariocasciaro/object-path

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

Record: CVE-2021-3805
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1321
Updated: 2026-11-02

EUVDEUVD-2021-2018 7.5

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

Record: EUVD-2021-2018
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-8v63-cqqc-6r2c 7.5

Prototype Pollution in object-path

object-path is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'). The del() function fails to validate which Object properties it deletes. This allows attackers to modify the prototype of Object, causing the modification of default properties like toString on all objects.

Record: GHSA-8v63-cqqc-6r2c
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-915, CWE-1321
Updated: 2026-11-02

NVD 7.5

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

Record: CVE-2021-3805
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-1321
Updated: 2026-11-02

OSV 7.5

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

Record: CVE-2021-3805
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2021-3805 7.5

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

Record: DEBIAN-CVE-2021-3805
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

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OSVGHSA-8v63-cqqc-6r2c 7.5

Prototype Pollution in object-path

Record: GHSA-8v63-cqqc-6r2c
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1321, CWE-915
Updated: 2026-11-02

OSVUBUNTU-CVE-2021-3805 7.5

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

Record: UBUNTU-CVE-2021-3805
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVCLSA-2026-1774830277 No score

TuxCare security update for object-path (3 CVEs)

TuxCare rebuilt object-path to address 3 CVEs. Fixed in 0.11.4-tuxcare.1.

Record: CLSA-2026-1774830277
Updated: 2026-11-02

OSVUSN-5967-1 No score

node-object-path vulnerabilities

It was discovered that the set() method in object-path could be corrupted as a result of prototype pollution by sending a message to the parent process. An attacker could use this issue to cause object-path to crash. (CVE-2020-15256, CVE-2021-23434, CVE-2021-3805)

Record: USN-5967-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`object-path` npm	before 0.11.8	0.11.8
`object-path` TuxCare:npm From an advisory covering 3 CVEs	0.11.4-tuxcare.0 up to 0.11.4-tuxcare.1, plus listed versions 0.11.4	0.11.4-tuxcare.1
`node-object-path` Debian:12	before 0.11.8-1	0.11.8-1
`node-object-path` Debian:13	before 0.11.8-1	0.11.8-1
`node-object-path` Debian:14	before 0.11.8-1	0.11.8-1
`node-object-path` Debian:10 From an advisory covering 2 CVEs	before 0.11.4-2+deb10u2, plus listed versions 0.11.4-20.11.4-2+deb10u1	0.11.4-2+deb10u2
`node-object-path` Ubuntu:18.04:LTS	before 0.11.3-1ubuntu0.1, plus listed versions 0.11.3-1	0.11.3-1ubuntu0.1
`node-object-path` Ubuntu:20.04:LTS	before 0.11.4-2ubuntu0.1, plus listed versions 0.11.4-2	0.11.4-2ubuntu0.1
`node-object-path` Ubuntu:24.04:LTS	All versions, plus listed versions 0.11.8+~0.11.1-2	None known
`node-object-path` Ubuntu:25.10	All versions, plus listed versions 0.11.8+~0.11.1-2	None known

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Affected packages
Package	Affected	Fixed
`node-object-path` Ubuntu:26.10	All versions, plus listed versions 0.11.8+~0.11.4-1	None known
`node-object-path` Ubuntu:26.04:LTS	All versions, plus listed versions 0.11.8+~0.11.1-20.11.8+~0.11.4-1	None known
`node-object-path` Ubuntu:18.04:LTS From an advisory covering 3 CVEs	before 0.11.3-1ubuntu0.1, plus listed versions 0.11.3-1	0.11.3-1ubuntu0.1
`node-object-path` Ubuntu:20.04:LTS From an advisory covering 3 CVEs	before 0.11.4-2ubuntu0.1, plus listed versions 0.11.4-2	0.11.4-2ubuntu0.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-3805 is a high vulnerability (CVSS 7.5) in Mariocasciaro Mariocasciaro/object-path, published September 17, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.04%, the 81st percentile. Fixed in object-path 0.11.8.

References

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