CVE-2026-87553CWE-20

CVE-2026-87553

High · published September 9, 2026

CVSS v3.1
8.3
EPSS
0%
Percentile
36.4
In the wild
Unconfirmed
What it is

Improper input validation in SiteIsolation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

The record
Technical detail
CVSS v3.1
8.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00432 · 36.4th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2026-09-09T05:17Z
Affected products (1)
ProductVersionsFixed in
google/chrome< 153.0.8010.36153.0.8010.36
References (2)
https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html · [email protected]https://issues.chromium.org/issues/496595299 · [email protected]
EPSS history
Timeline
  • 10 SEP 03:18Z
    EPSS moved — → 0%
    epss
  • 09 SEP 00:09Z
    Improper input validation in SiteIsolation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to…
    cvelistv5