Vulnerabilities in pkg:npm/thrift

PACKAGE
Advisory Identifier: GHSA-526f-jxpj-jmg2
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Advisory Summary

CVE-2026-43870 is a HIGH (CVSS 7.3) remote code execution vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Thrift libraries in the npm ecosystem. The issue involves apache thrift vulnerable to path traversal, http request/response splitting, uncontrolled resource consumption. Remediation is available in the latest vendor maintenance releases.

2 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/thrift

2 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/thrift. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-526f-jxpj-jmg2 CVE-2026-43870 HIGH Apache Thrift vulnerable to Path Traversal, HTTP Request/Response Splitting, Uncontrolled Resource Consumption
GHSA-r67j-r569-jrwp CVE-2026-41636 HIGH Apache Thrift Node.js bindings vulnerable to Uncontrolled Recursion

CVE-2026-43870 at a Glance

CVE Identifier CVE-2026-43870
GHSA Identifier GHSA-526f-jxpj-jmg2
Severity HIGH
CVSS v3.1 Base Score 7.3
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Thrift
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.3

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:L/I:L/A:L).

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 Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2026-43870

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

thrift fixed: Latest secure release 
npm install thrift@Latest secure release
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 thrift

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-43870, inspect your project dependencies using npm:

npm ls thrift

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

Note: The npm ls thrift 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Thrift, 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

Origin Validation Error, Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting'), Uncontrolled Resource Consumption vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to upgrade to version [0.23.0](https://github.com/apache/thrift/releases/tag/v0.23.0), which fixes the issue.

CVE-2026-43870 Affected Thrift Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
thrift
npm/thrift
npm
≤ 0.22.0

References

NVD — CVE-2026-43870 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43870
Security Fix Commit FIX COMMIT
https://github.com/apache/thrift/commit/80184ddca4d4f60ac657bd82b2abc47269814f79
Thrift Source Repository REPOSITORY
https://github.com/apache/thrift
Thrift Release RELEASE
https://github.com/apache/thrift/releases/tag/v0.23.0
lists.apache.org/thread/pgtfq44ltc9t... WEB
https://lists.apache.org/thread/pgtfq44ltc9t63kxcbqmwqzt45pnhqdy
Thrift Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/05/05/4

Frequently Asked Questions

What is CVE-2026-43870?
CVE-2026-43870 is a security vulnerability in Thrift involving Apache Thrift vulnerable to Path Traversal, HTTP Request/Response Splitting, Uncontrolled Resource Consumption under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Thrift versions are affected?
Affected versions include releases prior to current release patches across affected packages: thrift.
What version fixes CVE-2026-43870?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is thrift affected?
Yes, thrift is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2026-43870?
CVE-2026-43870 has a CVSS v3.1 base score of 7.3 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2026-43870?
CVE-2026-43870 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check npm dependencies for CVE-2026-43870?
Run the dependency tree command: 'npm ls thrift'. 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-526f-jxpj-jmg2",
  "modified" : "2026-05-08T19:24:08Z",
  "published" : "2026-05-05T09:31:55Z",
  "aliases" : [ "CVE-2026-43870" ],
  "summary" : "Apache Thrift vulnerable to Path Traversal, HTTP Request/Response Splitting, Uncontrolled Resource Consumption",
  "details" : "Origin Validation Error, Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting'), Uncontrolled Resource Consumption vulnerability in Apache Thrift.\n\nThis issue affects Apache Thrift: before 0.23.0.\n\nUsers are recommended to upgrade to version [0.23.0](https://github.com/apache/thrift/releases/tag/v0.23.0), which fixes the issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "thrift"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.22.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-43870"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/thrift/commit/80184ddca4d4f60ac657bd82b2abc47269814f79"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/thrift"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/thrift/releases/tag/v0.23.0"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/pgtfq44ltc9t63kxcbqmwqzt45pnhqdy"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/05/05/4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-08T19:24:08Z",
    "nvd_published_at" : "2026-05-05T09:16:04Z"
  }
}