Description
Inappropriate implementation in HTMLParser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: Medium)
Published: 2026-06-30
Score: 5.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

An improper HTML parsing implementation in Chrome prior to 150.0.7871.47 and execute arbitrary scripts or HTML through a specially crafted web page, enabling cross‑site scripting attacks. The flaw stems from a failure to properly isolate malicious markup, allowing injection of arbitrary scripts or HTML. This vulnerability is a typical instance of a web application weakness that can lead to XSS.

Affected Systems

Google Chrome versions older than 150.0.7871.47 are affected; the vulnerability exists on any build of Chrome that ships those versions, regardless of the operating system.

Risk and Exploitability

The EPSS score of < 1% indicates an extremely low probability of exploitation, and the flaw is not listed in CISA's KEV catalog. The CVSS score of 5.4 reflects a medium impact. Based on the description, it is inferred that the most likely attack vector is delivering a crafted page via a malicious website, an email link, or a malicious attachment. Even so, the combination of a low EPSS and medium severity suggests that the real‑world exploitation risk is minimal.

Generated by OpenCVE AI on July 21, 2026 at 16:23 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade Chrome to version 150.0.7871.47 or later to apply the HTMLParser fix.
  • Enable and monitor Chrome's auto‑update feature so updates are installed automatically.
  • Implement a strict content‑ script loading to mitigate possible XSS even if other vulnerabilities appear.

Generated by OpenCVE AI on July 21, 2026 at 16:23 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4672-1 chromium security update
Debian DSA Debian DSA DSA-6378-1 chromium security update
History

Tue, 21 Jul 2026 16:45:00 +0000

Type Values Removed Values Added
Title Cross‑Site Scripting via HTMLParser in Google Chrome

Wed, 15 Jul 2026 11:15:00 +0000

Type Values Removed Values Added
Title Cross‑Site Scripting via HTMLParser in Google Chrome

Tue, 14 Jul 2026 01:15:00 +0000

Type Values Removed Values Added
Title Cross‑Site Scripting Vulnerability in Chrome's HTML Parser

Sun, 12 Jul 2026 03:00:00 +0000

Type Values Removed Values Added
Title Cross‑Site Scripting Vulnerability in Chrome's HTML Parser

Fri, 10 Jul 2026 04:15:00 +0000

Type Values Removed Values Added
Title Chrome HTMLParser Vulnerability Allowing Remote XSS via Crafted Pages

Thu, 09 Jul 2026 08:00:00 +0000

Type Values Removed Values Added
Title Chrome HTMLParser Vulnerability Allowing Remote XSS via Crafted Pages

Wed, 08 Jul 2026 20:00:00 +0000

Type Values Removed Values Added
Title Cross‑Site Scripting Vulnerability in Chrome’s HTMLParser

Wed, 08 Jul 2026 08:30:00 +0000

Type Values Removed Values Added
Title Cross‑Site Scripting Vulnerability in Chrome’s HTMLParser

Tue, 07 Jul 2026 16:15:00 +0000

Type Values Removed Values Added
Title Cross‑site scripting via HTMLParser in Chrome

Mon, 06 Jul 2026 12:30:00 +0000

Type Values Removed Values Added
Title Cross‑site scripting via HTMLParser in Chrome

Sun, 05 Jul 2026 19:45:00 +0000

Type Values Removed Values Added
Title User-Interface XSS via Chrome HTMLParser Improper Script Sanitization

Sat, 04 Jul 2026 20:00:00 +0000

Type Values Removed Values Added
Title User-Interface XSS via Chrome HTMLParser Improper Script Sanitization

Sat, 04 Jul 2026 04:15:00 +0000

Type Values Removed Values Added
Title Chrome HTMLParser Cross‑site Scripting Vulnerability

Fri, 03 Jul 2026 12:45:00 +0000

Type Values Removed Values Added
Title Chrome HTMLParser Cross‑site Scripting Vulnerability

Fri, 03 Jul 2026 05:30:00 +0000

Type Values Removed Values Added
Title HTMLParser Vulnerability Allowing Script Injection in Chrome

Thu, 02 Jul 2026 20:00:00 +0000

Type Values Removed Values Added
Title HTMLParser Vulnerability Allowing Script Injection in Chrome

Thu, 02 Jul 2026 11:45:00 +0000

Type Values Removed Values Added
Title Insecure HTML Parser Enables Cross‑Site Scripting in Chrome

Wed, 01 Jul 2026 20:45:00 +0000

Type Values Removed Values Added
Title Insecure HTML Parser Enables Cross‑Site Scripting in Chrome

Wed, 01 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-79
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 01 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
Title HTMLParser Vulnerability Enabling Arbitrary Script Injection
Weaknesses CWE-79

Wed, 01 Jul 2026 11:15:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome

Wed, 01 Jul 2026 03:00:00 +0000

Type Values Removed Values Added
Title HTMLParser Vulnerability Enabling Arbitrary Script Injection
Weaknesses CWE-79

Tue, 30 Jun 2026 23:15:00 +0000

Type Values Removed Values Added
Description Inappropriate implementation in HTMLParser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: Medium)
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-07-01T19:29:56.455Z

Reserved: 2026-06-29T23:04:06.570Z

Link: CVE-2026-13977

cve-icon Vulnrichment

Updated: 2026-07-01T19:29:51.825Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-21T16:30:03Z

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')