CVE-2026-113302High· 8.8▾ Twilight

chromium-browser: chromium-browser: arbitrary code execution via crafted HTML page (CVE-2026-113302)

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score48/ 100 · Moderate

impact 48.4 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Oct 20, 2026

Updated

Oct 21, 2026

CVSS

8.8

Vendor

Red Hat

Product

Chrome

CWE

CWE-416

Depth score

48 · Moderate

EPSS

0.44% · p38

Platforms

—

Source

CSAF

Vector

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

CISA SSVC

decided 2026-10-20

Exploitation: none
Automatable: no
Technical impact: total

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the vendor's CSAF advisory record, not NVD.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 22.

0.4% → 0.4%▲ 0.05%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

6 events · 3 days

Oct 20, 2026Published
Disclosed via CSAF
Oct 20, 2026CVSS changed
— → 8.8
Oct 20, 2026Severity changed
none → high
Oct 21, 2026Record revised
Last analysed / modified upstream
Oct 22, 2026EPSS first tracked
0.4%
Oct 23, 2026EPSS peak
0.4% → 0.4%

Red Hat CWE-416 #csaf #vex #red-hat #cve.org

Affected

Chrome >= 156.0.8078.47 < 156.0.8078.47

Full technical detail▾

Overview

A flaw was found in chromium-browser. A remote attacker can exploit a use-after-free issue—where memory is accessed after it has been released—within the Extensions component by convincing a user to visit a specially crafted HTML page. Successful exploitation allows the attacker to execute arbitrary code inside the browser's restricted sandbox environment.

Vendor advisories

Red Hat VEX · updated 2026-10-21 · vex

chromium-browser: chromium-browser: arbitrary code execution via crafted HTML page. Released 2026-10-20, updated 2026-10-21.

Not affected:

All currently supported Red Hat products

Remediation

Refer to the advisory for fix availability.

References

Change history

Field changes observed since this record was first indexed.

Oct 20, 2026CVSS — → 8.8
Oct 20, 2026Severity none → high

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#csaf#vex#red-hat#cve.org

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