CVE-2022-26260: Simple plist Prototype Pollution Vulnerability

CRITICAL
Advisory Identifier: GHSA-gff7-g5r8-mg8m
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CVSS 9.8
CWE-1321
Published
Advisory Summary

CVE-2022-26260 is a CRITICAL (CVSS 9.8) prototype pollution vulnerability (CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')) affecting Simple plist libraries in the npm ecosystem. The issue involves prototype pollution in simple-plist. Remediation is available by upgrading affected packages to version 1.3.1.

CVE-2022-26260 at a Glance

CVE Identifier CVE-2022-26260
GHSA Identifier GHSA-gff7-g5r8-mg8m
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Product Simple plist
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-26260

To remediate this vulnerability, upgrade all affected Simple plist dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

simple-plist fixed: 1.3.1 
npm install simple-plist@1.3.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls simple-plist

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2022-26260, inspect your project dependencies using npm:

npm ls simple-plist

Analyze the terminal output to locate any version of Simple plist in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.3.1), your application is affected.

Note: The npm ls simple-plist command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'), where the product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. In Simple plist, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

simple-plist v1.3.0 was discovered to contain a prototype pollution vulnerability via .parse().

CVE-2022-26260 Affected Simple plist Versions

1 component(s)
Fixed Versions:
1.3.1
Product / Package Ecosystem Affected Versions Fixed Version
simple-plist
npm/simple-plist
npm
< 1.3.1
1.3.1

References

NVD — CVE-2022-26260 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-26260
Simple plist Source Repository REPOSITORY
https://github.com/wollardj/simple-plist/issues/60
Simple plist Source Repository REPOSITORY
https://github.com/wollardj/simple-plist/issues/60#issuecomment-1083991840
Security Fix Commit FIX COMMIT
https://github.com/wollardj/simple-plist/commit/670e22fd6e46549a1d32d1065981e0f58eab98d6
Simple plist Source Repository REPOSITORY
https://github.com/wollardj/simple-plist

Frequently Asked Questions

What is CVE-2022-26260?
CVE-2022-26260 is a security vulnerability in Simple plist involving Prototype Pollution in simple-plist under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Which Simple plist versions are affected?
Affected versions include releases prior to 1.3.1 across affected packages: simple-plist.
What version fixes CVE-2022-26260?
Upgrading to 1.3.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is simple-plist affected?
Yes, simple-plist is affected in releases prior to 1.3.1. Upgrade your dependency to 1.3.1 or later.
What is the CVSS score of CVE-2022-26260?
CVE-2022-26260 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-26260?
CVE-2022-26260 is classified under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.).
How can I check npm dependencies for CVE-2022-26260?
Run the dependency tree command: 'npm ls simple-plist'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-gff7-g5r8-mg8m",
  "modified" : "2022-03-29T13:08:19Z",
  "published" : "2022-03-23T00:00:22Z",
  "aliases" : [ "CVE-2022-26260" ],
  "summary" : "Prototype Pollution in simple-plist",
  "details" : "simple-plist v1.3.0 was discovered to contain a prototype pollution vulnerability via .parse().",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "simple-plist"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.3.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-26260"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/wollardj/simple-plist/issues/60"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/wollardj/simple-plist/issues/60#issuecomment-1083991840"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/wollardj/simple-plist/commit/670e22fd6e46549a1d32d1065981e0f58eab98d6"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/wollardj/simple-plist"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1321" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-03-29T13:08:19Z",
    "nvd_published_at" : "2022-03-22T19:15:00Z"
  }
}