CVE-2026-87606: Google Chrome · Missing Authorization
Affects Google ChromeSource CVE Database V5
Not known to be exploited · CVSS 8.1 High : upgrade to 153.0.8010.36 soon.
Data as of 26 Oct 2026, 10:12 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 24% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Total control over the software or total information disclosure
CISA SSVC assessment, 2026-09-10.
- Patch
- Available – fixed in 153.0.8010.36
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 9 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade Google Chrome to 153.0.8010.36.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| GoogleChrome | Affected
| Fixed in
|
AI-suggested
Users should update Google Chrome to version 153.0.8010.36 or later to apply the official fix. No additional mitigation is required as the vulnerability is addressed by this update.
Description
CVE-2026-87606 is a vulnerability in Google Chrome's SiteIsolation feature prior to version 153.0.8010.36. It involves missing authorization that allows a remote attacker who has compromised the renderer process to bypass site isolation using a crafted HTML page. The issue has been fixed in Chrome version 153.0.8010.36.