CVE-2026-7966
published 2026-05-06CVE-2026-7966: Insufficient validation of untrusted input in SiteIsolation in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer…
PriorityP412low3.1CVSS 3.1
AVNACHPRNUIRSUCLINAN
EPSS
0.22%
12.1th percentile
Insufficient validation of untrusted input in SiteIsolation in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| chrome | < 148.0.7778.96 | 148.0.7778.96 | |
| chrome | >= 148.0.7778.96 < 148.0.7778.96 | 148.0.7778.96 | |
| chrome_desktop | — | — |
CVSS provenance
nvdv3.13.1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
cvelistv5v3.13.1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
vendor_redhat8.7MEDIUM
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VulDB
Google Chrome up to 147.0.7727.138 SiteIsolation sandbox (ID 497341)
vuldb·2026-05-06
CVE-2026-7966 [CRITICAL] Google Chrome up to 147.0.7727.138 SiteIsolation sandbox (ID 497341)
A vulnerability has been found in Google Chrome and classified as critical. Affected by this issue is some unknown functionality of the component SiteIsolation. The manipulation leads to sandbox issue.
This vulnerability is uniquely identified as CVE-2026-7966. The attack is possible to be carried out remotely. No exploit exists.
The affected component should be upgraded.
CVEList
CVE-2026-7966: Insufficient validation of untrusted input in SiteIsolation in Google Chrome prior to 148
cvelistv5·2026-05-06·CVSS 3.1
CVE-2026-7966 [LOW] CWE-20 CVE-2026-7966: Insufficient validation of untrusted input in SiteIsolation in Google Chrome prior to 148
Insufficient validation of untrusted input in SiteIsolation in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
GHSA
GHSA-9c2c-f546-5wxv: Insufficient validation of untrusted input in SiteIsolation in Google Chrome prior to 148
ghsa_unreviewed·2026-05-06
CVE-2026-7966 [LOW] CWE-20 GHSA-9c2c-f546-5wxv: Insufficient validation of untrusted input in SiteIsolation in Google Chrome prior to 148
Insufficient validation of untrusted input in SiteIsolation in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
Chrome
Stable Channel Update for ChromeOS / ChromeOS Flex: CVE-2026-7966
vendor_chrome·2026-05-19
CVE-2026-7966 Stable Channel Update for ChromeOS / ChromeOS Flex: CVE-2026-7966
Stable Channel Update for ChromeOS / ChromeOS Flex
CVE-2026-7966
Chrome
Stable Channel Update for Desktop: CVE-2026-7964
vendor_chrome·2026-05-05
CVE-2026-7964 [MEDIUM] Stable Channel Update for Desktop: CVE-2026-7964
Stable Channel Update for Desktop
CVE-2026-7964: Insufficient validation of untrusted input in FileSystem. Reported by Google on 2026-03-28 [N/A][ 497255035 ] Medium CVE-2026-7965: Insufficient validation of untrusted input in DevTools
Reported by Google on 2026-03-28 [N/A][ 497341787 ] Medium CVE-2026-7966: Insufficient validation of untrusted input in SiteIsolation
Severity: medium
Red Hat
chromium-browser: Insufficient validation of untrusted input in SiteIsolation
vendor_redhat·2026-05-05·CVSS 8.7
CVE-2026-7966 [MEDIUM] CWE-1289 chromium-browser: Insufficient validation of untrusted input in SiteIsolation
chromium-browser: Insufficient validation of untrusted input in SiteIsolation
An insufficient validation of untrusted input flaw was found in the SiteIsolation component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=497341787
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-7966 chromium-browser: Insufficient validation of untrusted input in SiteIsolation
bugzilla·2026-05-06
CVE-2026-7966 [MEDIUM] CVE-2026-7966 chromium-browser: Insufficient validation of untrusted input in SiteIsolation
CVE-2026-7966 chromium-browser: Insufficient validation of untrusted input in SiteIsolation
Insufficient validation of untrusted input in SiteIsolation in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
Rapid7
Patch Tuesday - May 2026
blogs_rapid7·2026-05-13·CVSS 10.0
CVE-2026-41089 [CRITICAL] Patch Tuesday - May 2026
Microsoft is publishing 137 vulnerabilities on May 2026 Patch Tuesday . Microsoft is not aware of exploitation in the wild or public disclosure for any of these vulnerabilities. So far this month, Microsoft has provided patches to address 133 browser vulnerabilities, which are not included in the Patch Tuesday count above.
## Windows Netlogon: critical RCE
Anyone responsible for securing a domain controller should prioritize remediation of CVE-2026-41089 , which is a critical stack-based buffer overflow in Windows Netlogon with a CVSS v3 base score of 9.8. Exploitation leads to execution in the context of the Netlogon service, so that’s SYSTEM privileges on the domain controller. For most pentesters, that’s the point at which the customer report more or less writes itself. No privileges
2026-05-06
Published