SB2026090237 - Multiple vulnerabilities in Google Chrome
Published: September 2, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 26 vulnerabilities.
1) Missing Authorization (CVE-ID: CVE-2026-84323)
CWE-ID: CWE-862 - Missing Authorization
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass authorization checks.
The vulnerability exists due to improper access control in FileSystem when handling file system operations. A remote attacker can perform unauthorized actions to bypass authorization checks.
User interaction is required.
2) Improper Authorization (CVE-ID: CVE-2026-84331)
CWE-ID: CWE-285 - Improper Authorization
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass authorization.
The vulnerability exists due to improper access control in Actor when processing crafted content. A remote attacker can trigger the vulnerable logic to bypass authorization.
User interaction is required.
3) Use-after-free (CVE-ID: CVE-2026-84350)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to use-after-free error in TabStrip in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and crash the browser.
4) Spoofing attack (CVE-ID: CVE-2026-84356)
CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to spoof the user interface.
The vulnerability exists due to UI misrepresentation in FullScreen when rendering fullscreen content. A remote attacker can present crafted fullscreen content to spoof the user interface.
User interaction is required.
5) Unintended Proxy or Intermediary (CVE-ID: CVE-2026-84329)
CWE-ID: CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper access control in CredentialProvider when handling credential access. A remote attacker can trick the victim into interacting with crafted web content to disclose sensitive information.
User interaction is required.
6) Improper access control (CVE-ID: CVE-2026-84327)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass authorization.
The vulnerability exists due to improper access control in Autofill when handling crafted web content. A remote attacker can induce the browser to process crafted content to bypass authorization.
User interaction is required.
7) Improper access control (CVE-ID: CVE-2026-84335)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass authorization restrictions.
The vulnerability exists due to improper access control in TabStrip when handling user interaction with browser tabs. A remote attacker can manipulate tab-related actions to bypass authorization restrictions.
User interaction is required.
8) Information disclosure (CVE-ID: CVE-2026-84348)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output in MediaCapture in Google Chrome. A remote attacker can trick the victim to open a specially crafted web page and gain access to sensitive information.
9) Improper Authorization (CVE-ID: CVE-2026-84334)
CWE-ID: CWE-285 - Improper Authorization
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass authorization checks.
The vulnerability exists due to improper access control in Chromoting when handling requests. A remote attacker can send a crafted request to bypass authorization checks.
10) Spoofing attack (CVE-ID: CVE-2026-84330)
CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to spoof the user interface.
The vulnerability exists due to improper user interface handling in FullScreen when rendering fullscreen content. A remote attacker can present crafted content to spoof the user interface.
User interaction is required.
11) Improper access control (CVE-ID: CVE-2026-84332)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass authorization restrictions.
The vulnerability exists due to improper access control in SiteSettings when handling site settings operations. A remote attacker can manipulate site settings interactions to bypass authorization restrictions.
User interaction is required.
12) Improper privilege management (CVE-ID: CVE-2026-84358)
CWE-ID: CWE-269 - Improper Privilege Management
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to escalate privileges.
The vulnerability exists due to improper privilege management in Downloads when processing download-related actions. A remote attacker can induce the browser to perform crafted download-related operations to escalate privileges.
User interaction is required.
13) Improper access control (CVE-ID: CVE-2026-84355)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass authorization checks.
The vulnerability exists due to improper access control in Navigation when handling navigation operations. A remote attacker can cause the browser to process crafted content to bypass authorization checks.
User interaction is required to trigger the issue.
14) Use-after-free (CVE-ID: CVE-2026-84353)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the Shared Tab Groups component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
15) Use-after-free (CVE-ID: CVE-2026-84347)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within WebRTC in Google Chrome. A remote attacker can trick the victim into visiting a specially crafted web page, trigger a use-after-free error and gain access to sensitive information.
16) Improper access control (CVE-ID: CVE-2026-84328)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass authorization restrictions.
The vulnerability exists due to improper access control in FileSystem when handling browser operations. A remote attacker can perform unauthorized actions to bypass authorization restrictions.
17) Input validation error (CVE-ID: CVE-2026-84325)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input in DataTransfer in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and execute arbitrary code on the system.
18) Buffer overflow (CVE-ID: CVE-2026-84351)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a boundary error in GPU in Google Chrome. A remote attacker can trick the victim to visit a specially crafted webpage, trigger a buffer overflow and execute arbitrary code on the system.
19) Use-after-free (CVE-ID: CVE-2026-84333)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the Dawn component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
20) Use of uninitialized resource (CVE-ID: CVE-2026-84326)
CWE-ID: CWE-908 - Use of Uninitialized Resource
CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to usage of uninitialized resources in V8 in Google Chrome. A remote attacker can trick the victim to visit a specially crafted webpage, trigger uninitialized usage of resources and compromise the affected system.
21) Use-after-free (CVE-ID: CVE-2026-84349)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the Browser component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
22) Use-after-free (CVE-ID: CVE-2026-84324)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the Proxy component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
23) Input validation error (CVE-ID: CVE-2026-84357)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input in Omnibox in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and execute arbitrary code on the system.
24) Information disclosure (CVE-ID: CVE-2026-84359)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an information leak in Skia when rendering content. A remote attacker can trick the victim into opening crafted content to disclose sensitive information.
User interaction is required.
25) Improper Authorization (CVE-ID: CVE-2026-84354)
CWE-ID: CWE-285 - Improper Authorization
CVSSv4: 7.4 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to incorrect authorization in FileSystem in Google Chrome. A remote attacker can trick the victim to visit a specially crafted website, bypass implemented security measures and execute arbitrary code.
26) Use-after-free (CVE-ID: CVE-2026-84352)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the WebGL component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Remediation
Install update from vendor's website.
References
- https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop.html
- https://crbug.com/502411391
- https://crbug.com/521753402
- https://crbug.com/513713427
- https://crbug.com/503787232
- https://crbug.com/498850269
- https://crbug.com/498725213
- https://crbug.com/522302504
- https://crbug.com/518100026
- https://crbug.com/517798926
- https://crbug.com/517091927
- https://crbug.com/514489238
- https://crbug.com/514006886
- https://crbug.com/511774376
- https://crbug.com/522307103
- https://crbug.com/501679156
- https://crbug.com/498710886
- https://crbug.com/553117928
- https://crbug.com/551593376
- https://crbug.com/549311485
- https://crbug.com/547936520
- https://crbug.com/537105664
- https://crbug.com/533534913
- https://crbug.com/523208474
- https://crbug.com/514078656
- https://crbug.com/498839176
- https://crbug.com/546260492