CVE-2026-47428

Description

Vitest browser mode serves unsanitized otelCarrier query parameter as inline script

Description (MITRE) cveawg.mitre.org

Pulled from cveawg.mitre.org/api/cve/CVE-2026-47428 on 2026-07-27. Shown when MITRE's text differs from the cvelistV5 mirror.

Vitest is a testing framework powered by Vite. From 4.0.17 until 4.1.6 and 5.0.0-beta.3, Vitest Browser Mode served /__vitest_test__/ with the otelCarrier query parameter inserted directly into an inline module script, allowing a crafted browser-runner URL to execute arbitrary JavaScript in the Vitest server origin and recover VITEST_API_TOKEN for authenticated API calls. This issue is fixed in versions 4.1.6 and 5.0.0-beta.3.

Overview

State

—

Assigner (CNA)

—

CVSS severity

critical

CVSS score

9.6 / 10

CVSS vector

AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Effective score

9.6 / 10 CRITICAL source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2026-47428

Linked Threat

CVE-2026-47428 — CVE-2026-47428

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published

2026-07-14 20:17:02 UTC

NVD last modified

2026-07-15 20:23:47 UTC

NVD CVSS v3.1

9.6 / 10 CRITICAL source: security-advisories@github.com

NVD CVSS vector

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

Exploitability subscore

2.8 / 10

Impact subscore

6.0 / 10

EPSS score

0.0039 (probability of exploitation in next 30 days)

EPSS percentile

31.39% vs all CVEs — higher = more likely to be exploited, as of 2026-07-27

NVD-assigned CWE(s): CWE-79 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2026-44401

Assigner

GitHub_M

Published

Jul 14, 2026, 7:30:19 PM

Updated

Jul 15, 2026, 1:20:14 PM

EUVD base score (CVSS 3.1)

9.6 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EUVD-reported EPSS

0.3900

Vendors

vitest-dev

Products

vitest (4.0.17, < 4.1.6)

vitest (5.0.0-beta.0, < 5.0.0-beta.3)

Aliases

GHSA-2h32-95rg-cppp

ENISA description: Vitest is a testing framework powered by Vite. From 4.0.17 until 4.1.6 and 5.0.0-beta.3, Vitest Browser Mode served /__vitest_test__/ with the otelCarrier query parameter inserted directly into an inline module script, allowing a crafted browser-runner URL to execute arbitrary JavaScript in the Vitest server origin and recover VITEST_API_TOKEN for authenticated API calls. This issue is fixed in versions 4.1.6 and 5.0.0-beta.3.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

MITRE references (7) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

• https://github.com/vitest-dev/vitest/commit/18af98cee1830604d57f6a02bf28f8067cdffc06 x_refsource_MISC
• https://github.com/vitest-dev/vitest/commit/3514f9fa135c90e1c35754fc4d27c9cf351faafa x_refsource_MISC
• https://github.com/vitest-dev/vitest/pull/10283 x_refsource_MISC
• https://github.com/vitest-dev/vitest/pull/10285 x_refsource_MISC
• https://github.com/vitest-dev/vitest/releases/tag/v4.1.6 x_refsource_MISC
• https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.3 x_refsource_MISC
• https://github.com/vitest-dev/vitest/security/advisories/GHSA-2h32-95rg-cppp x_refsource_CONFIRM

Web references (2)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://nvd.nist.gov/vuln/detail/CVE-2026-47428 tenable:nvd.nist.gov
• https://www.cve.org/CVERecord?id=CVE-2026-47428 tenable:www.cve.org

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

• Microsoft Patches 198 Vulnerabilities in June 2026 Security Update
  web:cyberpress.org

  Microsoft has released its June 2026 Patch Tuesday security update, addressing 198 vulnerabilities across its product ecosystem, one of the largest single-month patches in recent memory.

  2026-06-19 02:31 UTC
• Microsoft Confirms Defender RoguePlanet 0-Day Exploit and Working to ...
  web:cybersecuritynews.com

  Microsoft has officially acknowledged a critical zero-day vulnerability in Microsoft Defender, publicly dubbed "RoguePlanet," and confirmed it is actively developing a security patch to address the flaw.

  2026-06-19 02:31 UTC
• Microsoft Patch Tuesday May 2026 - 120 Vulnerabilities Fixed, Including ...
  web:cybersecuritynews.com

  Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.

  2026-06-19 02:31 UTC
• Security Update Guide - Microsoft Security Response Center
  web:msrc.microsoft.com

  Security Update Guide - Microsoft Security Response Center

  2026-06-19 02:31 UTC
• Security Update Guide - Loading - Microsoft
  web:portal.msrc.microsoft.com

  The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

  2026-06-19 02:31 UTC
• Microsoft patches two zero-day flaws in Defender - CSO Online
  web:www.csoonline.com

  Microsoft released emergency fixes for two zero-day vulnerabilities in the malware protection components of Microsoft Defender. The flaws allow local attackers to gain system-level privileges or ...

  2026-06-19 02:31 UTC
• Microsoft working on a fix for RoguePlanet, a flaw that grants full PC ...
  web:www.malwarebytes.com

  Microsoft says it's working on a fix for an unpatched Defender vulnerability that can give attackers the highest level of access on Windows.

  2026-06-19 02:31 UTC
• Oracle Critical Patch Update Advisory - April 2026
  web:www.oracle.com

  This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

  2026-06-19 02:31 UTC
• Oracle Critical Security Patch Update Advisory - May 2026
  web:www.oracle.com

  This Critical Security Patch Update contains 35 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Security Patch Update and other Oracle Software Security Assurance activities is located at May 2026 Critical Security Patch Update: Executive Summary and Analysis.

  2026-06-19 02:31 UTC
• Patch Tuesday - June 2026 - Rapid7
  web:www.rapid7.com

  Microsoft is publishing 200 vulnerabilities on June 2026 Patch Tuesday, including an HTTP/2 denial of service vulnerability and an elevation of privilege vulnerability in PowerToys.

  2026-06-19 02:31 UTC

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