CVE-2026-8013
published 2026-05-06CVE-2026-8013: Insufficient validation of untrusted input in FedCM in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to leak cross-origin data via a crafted…
PriorityP419medium4.3CVSS 3.1
AVNACLPRNUIRSUCLINAN
EPSS
0.16%
6.0th percentile
Insufficient validation of untrusted input in FedCM in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
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
nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
vendor_redhat4.3MEDIUM
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Chrome
Stable Channel Update for ChromeOS / ChromeOS Flex: CVE-2026-8013
vendor_chrome·2026-05-19·CVSS 4.3
CVE-2026-8013 [MEDIUM] Stable Channel Update for ChromeOS / ChromeOS Flex: CVE-2026-8013
Stable Channel Update for ChromeOS / ChromeOS Flex
CVE-2026-8013
Chrome
Stable Channel Update for Desktop: CVE-2026-8012
vendor_chrome·2026-05-05·CVSS 5.4
CVE-2026-8012 [LOW] Stable Channel Update for Desktop: CVE-2026-8012
Stable Channel Update for Desktop
CVE-2026-8012: Inappropriate implementation in MHTML. Reported by Google on 2026-03-26 [N/A][ 497427430 ] Low CVE-2026-8013: Insufficient validation of untrusted input in FedCM
Reported by Google on 2026-03-29 [N/A][ 497490364 ] Low CVE-2026-8014: Inappropriate implementation in Preload
Severity: low
Red Hat
chromium-browser: Insufficient validation of untrusted input in FedCM
vendor_redhat·2026-05-05·CVSS 4.3
CVE-2026-8013 [MEDIUM] CWE-346 chromium-browser: Insufficient validation of untrusted input in FedCM
chromium-browser: Insufficient validation of untrusted input in FedCM
An insufficient validation of untrusted input flaw was found in the FedCM component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=497427430
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.
GHSA
GHSA-qx5w-9x78-2xgm: Insufficient validation of untrusted input in FedCM in Google Chrome prior to 148
ghsa_unreviewed·2026-05-06
CVE-2026-8013 [MEDIUM] CWE-20 GHSA-qx5w-9x78-2xgm: Insufficient validation of untrusted input in FedCM in Google Chrome prior to 148
Insufficient validation of untrusted input in FedCM in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
VulDB
Google Chrome up to 147.0.7727.138 FedCM cross-domain policy (ID 497427 / EUVD-2026-28129)
vuldb·2026-05-06·CVSS 4.3
CVE-2026-8013 [MEDIUM] Google Chrome up to 147.0.7727.138 FedCM cross-domain policy (ID 497427 / EUVD-2026-28129)
A vulnerability, which was classified as problematic, has been found in Google Chrome. Affected by this vulnerability is an unknown functionality of the component FedCM. The manipulation leads to permissive cross-domain policy with untrusted domains.
This vulnerability is documented as CVE-2026-8013. The attack can be initiated remotely. There is not any exploit available.
It is advisable to upgrade the affected component.
No detection rules found.
No public exploits indexed.
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
Bugzilla
CVE-2026-8013 chromium-browser: Insufficient validation of untrusted input in FedCM
bugzilla·2026-05-06·CVSS 4.3
CVE-2026-8013 [MEDIUM] CVE-2026-8013 chromium-browser: Insufficient validation of untrusted input in FedCM
CVE-2026-8013 chromium-browser: Insufficient validation of untrusted input in FedCM
Insufficient validation of untrusted input in FedCM in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
2026-05-06
Published