CVE-2026-78953CWE-862broken-access-control

CVE-2026-78953

Low · published August 26, 2026

CVSS v3.1
3.1
EPSS
0%
Percentile
11.1
In the wild
Unconfirmed
What it is

Missing authorization in SiteIsolation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file. (Chromium security severity: Medium)

The record
Technical detail
CVSS v3.1
3.1 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00213 · 11.1th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-08-26T01:17Z
Affected products (1)
ProductVersionsFixed in
google/chrome< 152.0.7977.65152.0.7977.65
References (2)
https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html · [email protected]https://issues.chromium.org/issues/516665605 · [email protected]
EPSS history
Timeline
  • 27 AUG 06:46Z
    EPSS moved — → 0%
    epss
  • 25 AUG 20:10Z
    Missing authorization in SiteIsolation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass…
    cvelistv5