Vulnerabilities / CVE-2026-118337
Critical · not yet confirmed exploited · Google ChromeCVE-2026-118337
Google Chrome critical remote code execution, CVSS 9.3.
Use after free in Forms in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
| Vendor and product | Google · Chrome |
|---|---|
| Type | remote code execution |
| Severity | Critical 9.3 CVSS base score |
| Affected versions | Chrome: 156.0.8078.73 to before 156.0.8078.73 |
| First published | 27 October 2026 |
| Weakness | Use after free |
| Exploited | Not confirmed. Critical flaws in Google products have been exploited before: Google appears on CISA's exploited list. |
Patch before it is exploited
Patch to the fixed version the vendor names, today if the product faces the internet.
Until it is patched, take the affected service off the internet or put it behind a VPN or allow-list.
Look for signs it was already used: new accounts, web shells, unexpected processes and outbound connections since the date it was listed.
Know the day it starts being used
Threat Landscape Monitoring fingerprints the software your internet-facing hosts disclose and tells you the day a vulnerability on them is confirmed exploited, with the host and the fix. The free plan covers one domain.
CVE-2026-118337 in short
Is CVE-2026-118337 being exploited?
Not confirmed as of 14 November 2026: CISA has not added it to its Known Exploited Vulnerabilities catalogue. Critical flaws in Google products are a frequent target, so patch before that changes; this page is updated daily.
How severe is CVE-2026-118337?
NVD rates it critical, with a CVSS base score of 9.3.
Which versions of Google Chrome are affected by CVE-2026-118337?
According to the CVE record: Chrome: 156.0.8078.73 to before 156.0.8078.73. Check the vendor's advisory for the fixed version.
How do I fix CVE-2026-118337?
Patch to the fixed version the vendor names, today if the product faces the internet. Until it is patched, take the affected service off the internet or put it behind a VPN or allow-list. Look for signs it was already used: new accounts, web shells, unexpected processes and outbound connections since the date it was listed.
Sources: NVD, the CVE record, FIRST EPSS and the CISA Known Exploited Vulnerabilities catalogue. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 14 November 2026.