Vulnerability-Lookup

CVE-2021-23434 (GCVE-0-2021-23434)

Vulnerability from cvelistv5 – Published: 2021-08-27 16:50 – Updated: 2024-09-16 16:48

Title

Prototype Pollution

Summary

This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.

Severity

5.6 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CWE

Prototype Pollution

Assigner

snyk mitre root

References

5 references

URL	Tags
https://snyk.io/vuln/SNYK-JS-OBJECTPATH-1569453
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1570423
https://github.com/mariocasciaro/object-path/comm…
https://github.com/mariocasciaro/object-path%230116
https://lists.debian.org/debian-lts-announce/2023…	mailing-list

Impacted products

1 product

Vendor	Product	Version	CPE status
n/a	object-path	Affected: unspecified , < 0.11.6 (custom)

Date Public

2021-08-27 00:00

Credits

Alessio Della Libera of Snyk Research Team

Show details on NVD website

JSON

To clipboard

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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T11:48:02+00:00",
      "cve": "CVE-2021-23434",
      "id": "CVE-2021-23434",
      "initial_release_date": "2021-08-27T00:00:00+00:00",
      "product_status:known_affected": "16",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "object-path: Type confusion vulnerability can lead to a bypass of CVE-2020-15256",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-23434.json",
      "version": "3"
    }
  }
}

RHSA-2022_0856

Vulnerability from csaf_redhat - Published: 2022-03-14 13:54 - Updated: 2024-11-22 17:58

Summary

Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.2.11 security updates and bug fixes

Severity

Moderate

Scope

2 vulnerabilities in this advisory, including CVE-2021-23434.

CVE-2021-23434

Prototype pollution has been discovered in object-path NodeJS library. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.

8.6 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Fixed: 77 products

https://access.redhat.com/errata/RHSA-2022:0856

Open the full advisory

ubuntu-cve-2021-23434

Vulnerability from osv_ubuntu

Published

2021-08-27 17:15

Modified

2026-05-20 14:53

Summary

Details

This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === 'proto' returns false if currentPath is ['proto']. This is because the === operator returns always false when the type of the operands is different.

Severity

5.6 (Medium)


                    
                      CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

8.6 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2021-23434	REPORT
	https://snyk.io/vuln/SNYK-JS-OBJECTPATH-1569453	REPORT
	https://github.com/mariocasciaro/object-path/comm…	REPORT
	https://github.com/mariocasciaro/object-path%230116	REPORT
	https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1570423	REPORT
	https://ubuntu.com/security/notices/USN-5967-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2021-23434	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "node-object-path",
            "binary_version": "0.11.3-1ubuntu0.1"
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      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
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      "versions": [
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      "versions": [
        "0.11.8+~0.11.1-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-object-path",
            "binary_version": "0.11.8+~0.11.4-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "node-object-path",
        "purl": "pkg:deb/ubuntu/node-object-path@0.11.8+~0.11.4-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.11.8+~0.11.1-2",
        "0.11.8+~0.11.4-1"
      ]
    }
  ],
  "aliases": [],
  "details": "This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === \u0027__proto__\u0027 returns false if currentPath is [\u0027__proto__\u0027]. This is because the === operator returns always false when the type of the operands is different.",
  "id": "UBUNTU-CVE-2021-23434",
  "modified": "2026-05-20T14:53:09Z",
  "published": "2021-08-27T17:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-23434"
    },
    {
      "type": "REPORT",
      "url": "https://snyk.io/vuln/SNYK-JS-OBJECTPATH-1569453"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/mariocasciaro/object-path/commit/7bdf4abefd102d16c163d633e8994ef154cab9eb"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/mariocasciaro/object-path%230116"
    },
    {
      "type": "REPORT",
      "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1570423"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5967-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-23434"
    }
  ],
  "related": [
    "USN-5967-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-23434"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2021-23434 (GCVE-0-2021-23434)

RHSA-2022_0856

ubuntu-cve-2021-23434

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature

Related by attack behaviour