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Vulnerabilities

Vulnerability · CVE-2026-118244

Highcharts Core: HTML text parsing falls back to unfiltered during printing

Published Oct 28, 2026 · Red Hat Red Hat Enterprise Linux

Last checked Nov 7, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-118244. EPSS is 0.34%. Act only if a listed version of Red Hat Red Hat Enterprise Linux is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.34%
Remediation
Vendor / distro source
Affected products
npm highcharts

When the HTML text parser cannot obtain a document from DOMParser because the call throws, it falls back to assigning the raw markup to the innerHTML of an element created in the hosting document, and the allow-list is applied only to the resulting DOM afterwards. In Chromium the Trusted Types policy callback that the parser uses throws while a beforeprint handler is running, so if the hosting page re-renders the …

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • npm highchartsversion unspecified

How to fix CVE-2026-118244

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-118244. EPSS is 0.34%. Act only if a listed version of Red Hat Red Hat Enterprise Linux is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.34%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 28, 2026 · GitLab Advisory Database

    Detected

    When the HTML text parser cannot obtain a document from DOMParser because the call throws, it falls back to assigning the raw markup to the innerHTML of an element created in the hosting document, and the allow-list is applied only to the resulting DOM afterwards. In Chromium the Trusted Types policy callback that the parser uses throws while a beforeprint handler is running, so if the hosting pag

Sources

  • CVE.orgVulnerability recordCVE-2026-118244

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-118244

    30-day exploitation probability 0.34%

    first.org
  • GitLab Advisory DatabasePackage advisoryCVE-2026-118244

    When the HTML text parser cannot obtain a document from DOMParser because the call throws, it falls back to assigning the raw markup to the innerHTML of an element created in the hosting document, and the allow-list is applied only to the resulting DOM afterwards. In Chromium the Trusted Types policy callback that the parser uses throws while a beforeprint handler is running, so if the hosting pag

    advisories.gitlab.com
  • Red Hat Security DataVendor advisoryCVE-2026-118244

    highcharts: Highcharts: Cross-site scripting via unsanitized markup fallback during chart redraw

    access.redhat.com

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 7, 2026
  • GitLab Advisory DatabaseOct 30, 2026
  • Red Hat Security DataOct 30, 2026
  • CVE.orgOct 29, 2026