CVE-2026-103630
published 2026-10-02CVE-2026-103630: Use after free in FedCM in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML…
PriorityP356critical9.6CVSS 3.1
AVNACLPRNUIRSCCHIHAH
EPSS
0.33%
24.3th percentile
Use after free in FedCM in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| chrome | < 154.0.8037.97 | 154.0.8037.97 | |
| chrome | >= 154.0.8037.97 < 154.0.8037.97 | 154.0.8037.97 | |
| chrome_desktop | — | — |
CVSS provenance
nvdv3.19.6CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
vendor_redhat9.6CRITICAL
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Red Hat
chromium-browser: Use after free in FedCM
vendor_redhat·2026-10-02·CVSS 9.6
CVE-2026-103630 [CRITICAL] CWE-416 chromium-browser: Use after free in FedCM
chromium-browser: Use after free in FedCM
Use after free in FedCM in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
An use after free flaw was found in the FedCM component of the Chromium browser.
Upstream bug(s):
https://issues.chromium.org/issues/557323166
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.
Chrome
Stable Channel Update for Desktop: CVE-2026-103630
vendor_chrome·2026-10-01·CVSS 8.3
CVE-2026-103630 [HIGH] Stable Channel Update for Desktop: CVE-2026-103630
Stable Channel Update for Desktop
CVE-2026-103630: Use after free in FedCM. Reported by xinyang on 2026-09-04 [N/A][ 559893859 ] High CVE-2026-103625: Type confusion in V8
Reported by Google on 2026-09-11 [TBD][ 561660166 ] High CVE-2026-103624: Use after free in Contextual Tasks
Severity: high
VulDB
Google Chrome up to 154.0.8037.92 FedCM use after free
vuldb·2026-10-02
CVE-2026-103630 [CRITICAL] Google Chrome up to 154.0.8037.92 FedCM use after free
A vulnerability has been found in Google Chrome and classified as critical. Affected by this vulnerability is an unknown functionality of the component FedCM. The manipulation leads to use after free.
This vulnerability is documented as CVE-2026-103630. The attack can be initiated remotely. There is not any exploit available.
The affected component should be upgraded.
GHSA
Use after free in FedCM in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page.
ghsa_unreviewed·2026-10-02
CVE-2026-103630 CWE-416 Use after free in FedCM in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page.
Use after free in FedCM in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-103621 CVE-2026-103622 CVE-2026-103623 CVE-2026-103624 CVE-2026-103625 CVE-2026-103626 CVE-2026-103627 CVE-2026-103628 CVE-2026-103629 CVE-2026-103630 CVE-2026-103631 chromium: various flaws
bugzilla·2026-10-05·CVSS 4.3
CVE-2026-103621 [MEDIUM] CVE-2026-103621 CVE-2026-103622 CVE-2026-103623 CVE-2026-103624 CVE-2026-103625 CVE-2026-103626 CVE-2026-103627 CVE-2026-103628 CVE-2026-103629 CVE-2026-103630 CVE-2026-103631 chromium: various flaws
CVE-2026-103621 CVE-2026-103622 CVE-2026-103623 CVE-2026-103624 CVE-2026-103625 CVE-2026-103626 CVE-2026-103627 CVE-2026-103628 CVE-2026-103629 CVE-2026-103630 CVE-2026-103631 chromium: various flaws [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Type confusion in V8 in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
Use after free in Contextual Tasks in Google Chrome on on Windows prior to 154.0.8037.97 allowed a remote attacker who had compromised the renderer process to potentially
Bugzilla
CVE-2026-103621 CVE-2026-103622 CVE-2026-103623 CVE-2026-103624 CVE-2026-103625 CVE-2026-103626 CVE-2026-103627 CVE-2026-103628 CVE-2026-103629 CVE-2026-103630 CVE-2026-103631 chromium: various flaws
bugzilla·2026-10-05·CVSS 4.3
CVE-2026-103621 [MEDIUM] CVE-2026-103621 CVE-2026-103622 CVE-2026-103623 CVE-2026-103624 CVE-2026-103625 CVE-2026-103626 CVE-2026-103627 CVE-2026-103628 CVE-2026-103629 CVE-2026-103630 CVE-2026-103631 chromium: various flaws
CVE-2026-103621 CVE-2026-103622 CVE-2026-103623 CVE-2026-103624 CVE-2026-103625 CVE-2026-103626 CVE-2026-103627 CVE-2026-103628 CVE-2026-103629 CVE-2026-103630 CVE-2026-103631 chromium: various flaws [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Type confusion in V8 in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
Use after free in Contextual Tasks in Google Chrome on on Windows prior to 154.0.8037.97 allowed a remote attacker who had compromised the renderer process to potential
Bugzilla
CVE-2026-103630 chromium-browser: Use after free in FedCM
bugzilla·2026-10-02
CVE-2026-103630 [HIGH] CVE-2026-103630 chromium-browser: Use after free in FedCM
CVE-2026-103630 chromium-browser: Use after free in FedCM
Use after free in FedCM in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
2026-10-02
Published