CVE-2026-13982: Google Chrome XSS Vulnerability

CVE-2026-13982 Overview

CVE-2026-13982 is a UI spoofing vulnerability in the Passwords component of Google Chrome. The flaw stems from incorrect security UI handling [CWE-451] in versions prior to 150.0.7871.47. A remote attacker who has already compromised the renderer process can use a crafted HTML page to spoof security-relevant UI elements tied to the password manager. Chromium engineers rated the issue Medium severity, while the National Vulnerability Database assigned it a low CVSS score. The vulnerability requires user interaction and elevated attack complexity, which reduces practical exploitability. No public exploit or proof-of-concept has been published, and the flaw is not listed in the CISA Known Exploited Vulnerabilities catalog.

Critical Impact
An attacker who already controls the renderer can spoof password manager UI to trick users into disclosing credentials or approving unintended actions.

Affected Products

Google Chrome versions prior to 150.0.7871.47
Chromium-based desktop builds sharing the vulnerable Passwords component
Downstream browsers that embed the affected Chromium release

Discovery Timeline

2026-06-30 - CVE-2026-13982 published to the National Vulnerability Database
2026-07-02 - Last updated in NVD database

Technical Details for CVE-2026-13982

Vulnerability Analysis

The issue lives in the Passwords surface of Chrome, where trusted UI elements convey information about saved credentials and password prompts. The browser fails to correctly isolate or authenticate certain UI states when the renderer process is under attacker control. As a result, a crafted HTML page can influence how password-related UI is drawn or perceived by the user, producing a spoofing condition classified under [CWE-451] (User Interface Misrepresentation of Critical Information).

Exploitation is chained. The attacker must first compromise the renderer, typically by exploiting a separate memory-safety or logic bug. From that position, the crafted page manipulates password UI cues so the user cannot distinguish attacker-controlled content from legitimate browser chrome. The confidentiality impact is none, but integrity is partially affected because the user may act on falsified security indicators.

Root Cause

The root cause is improper security UI rendering in the Passwords component. Chrome relies on browser-process controlled indicators to signal password prompt authenticity. In the vulnerable build, renderer-side content can produce visuals that closely resemble those trusted indicators, breaking the trust boundary between untrusted web content and privileged password UI.

Attack Vector

The attack vector is network based. A user must visit or interact with a crafted page on a renderer already compromised by the attacker. The high attack complexity reflects the prerequisite of a renderer compromise and the requirement of user interaction with the spoofed element. Refer to the Chromium Issue Tracker Entry and the Google Chrome Update Announcement for vendor-provided technical context.

Detection Methods for CVE-2026-13982

Indicators of Compromise

Chrome desktop clients running versions earlier than 150.0.7871.47 in enterprise inventory scans
Renderer process crashes or anomalous child-process behavior preceding password prompts
User reports of password prompts appearing in unexpected contexts or on unrelated origins

Detection Strategies

Query endpoint inventory for Chrome build strings and flag hosts below 150.0.7871.47
Correlate browser telemetry with credential submission events to unfamiliar or newly registered domains
Monitor for exploitation of upstream renderer vulnerabilities that would provide the required foothold

Monitoring Recommendations

Ingest Chrome enterprise reporting into your SIEM to track version drift across managed fleets
Alert on outbound HTTP POSTs containing credential-like parameters to domains outside sanctioned identity providers
Track help-desk tickets referencing unexpected password save prompts or autofill behavior

How to Mitigate CVE-2026-13982

Immediate Actions Required

Update all Chrome desktop installations to version 150.0.7871.47 or later
Enforce automatic updates through Chrome Enterprise policies where possible
Restart browser sessions after patch deployment to ensure the new binaries are active

Patch Information

Google released the fix in the Chrome stable channel update documented in the Google Chrome Update Announcement. Patched builds start at 150.0.7871.47. Because the exploit chain requires a compromised renderer, applying all concurrent Chrome security fixes in the same release is essential.

Workarounds

Disable the built-in Chrome password manager and use a hardened third-party credential store until patching completes
Restrict Chrome usage to trusted sites via enterprise URL allowlists on sensitive endpoints
Train users to verify password prompts by inspecting the URL bar and the origin displayed in the credential dialog

bash

# Verify installed Chrome version on Windows endpoints
reg query "HKLM\SOFTWARE\Google\Chrome\BLBeacon" /v version

# Verify installed Chrome version on macOS
/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --version

# Verify installed Chrome version on Linux
google-chrome --version