SB2026102738 - Multiple vulnerabilities in WebKitGTK+ and WPE WebKit

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026102738

SB2026102738 - Multiple vulnerabilities in WebKitGTK+ and WPE WebKit

Published: October 27, 2026

Security Bulletin ID SB2026102738
CSH Severity
High
Patch available
YES
Number of vulnerabilities 32
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 44% Medium 13% Low 44%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 32 vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2026-112639)

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 when processing HTML content in WebKit Process Model. A remote attacker can trick the victim into visiting a specially crafted website and execute arbitrary code on the system.


2) Use-after-free (CVE-ID: CVE-2026-112653)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due to a use-after-free error when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser.


3) Use-after-free (CVE-ID: CVE-2026-112615)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due to a use-after-free error when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser.


4) Out-of-bounds read (CVE-ID: CVE-2026-112680)

CWE-ID: CWE-125 - Out-of-bounds read

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 gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in WebKit. A remote attacker can trick the victim into visiting a specially crafted website, trigger an out-of-bounds read error and read contents of memory on the system.


5) Use-after-free (CVE-ID: CVE-2026-112623)

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 when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted web page and execute arbitrary code on the system.


6) Type confusion (CVE-ID: CVE-2026-112659)

CWE-ID: CWE-843 - Type confusion

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 execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error in WebKit. A remote attacker can trick the victim into visiting a specially crafted web page, trigger a type confusion error and execute arbitrary code on the target system.



7) Use-after-free (CVE-ID: CVE-2026-112640)

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 when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and execute arbitrary code on the system.


8) Use-after-free (CVE-ID: CVE-2026-112654)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due to a use-after-free error when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser.


9) Deserialization of Untrusted Data (CVE-ID: N/A)

CWE-ID: CWE-502 - Deserialization of Untrusted Data

CVSSv4: 8.4 [CVSS:4.0/AV:L/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 execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data within the parsing of pickle files in OMolRunner. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


10) Deserialization of Untrusted Data (CVE-ID: N/A)

CWE-ID: CWE-502 - Deserialization of Untrusted Data

CVSSv4: 8.4 [CVSS:4.0/AV:L/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 execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data within the parsing of pickle files in Slab. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


11) Type confusion (CVE-ID: CVE-2026-113949)

CWE-ID: CWE-843 - Type confusion

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 execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error in WebKit. A remote attacker can trick the victim into visiting a specially crafted website, trigger a type confusion error and execute arbitrary code on the target system.


12) Use-after-free (CVE-ID: CVE-2026-113903)

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 when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and execute arbitrary code on the system.


13) Use-after-free (CVE-ID: CVE-2026-112637)

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 when processing HTML content in WebKit Canvas. A remote attacker can trick the victim into visiting a specially crafted website and execute arbitrary code on the system.


14) Use-after-free (CVE-ID: CVE-2026-112626)

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 when processing web content in WebKit JavaScript Bindings. A remote attacker can trick the victim into visiting a specially crafted website and execute arbitrary code on the system.


15) Protection mechanism failure (CVE-ID: CVE-2026-113897)

CWE-ID: CWE-693 - Protection Mechanism Failure

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 implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures in WebKit Process Model. A remote attacker can trick the victim into visiting a specially crafted website and break out of the web content sandbox. 


16) Protection mechanism failure (CVE-ID: CVE-2026-113952)

CWE-ID: CWE-693 - Protection Mechanism Failure

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 implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures in WebKit. A remote attacker can force the browser to use a media format that should be restricted in Lockdown Mode.


17) Use-after-free (CVE-ID: CVE-2026-112695)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due to a use-after-free error when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser.


18) Use-after-free (CVE-ID: CVE-2026-112666)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due to a use-after-free error when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser.


19) Race condition (CVE-ID: CVE-2026-112669)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due to a race condition in WebKit. A remote attacker can trick the victim into visiting a specially crafted web page and crash the browser.


20) Type confusion (CVE-ID: CVE-2026-112673)

CWE-ID: CWE-843 - Type confusion

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to crash the browser

The vulnerability exists due to a type confusion error in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser.


21) Input validation error (CVE-ID: CVE-2026-112684)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/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 insufficient validation of user-supplied input in WebKit. A remote attacker can trick the victim into visiting a specially crafted web page and crash the browser. 


22) Race condition (CVE-ID: CVE-2026-112686)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due to a race condition in WebKit. A remote attacker can trick the victim into visiting a specially crafted web page and crash the browser.


23) Use-after-free (CVE-ID: CVE-2026-112651)

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 when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted web page and execute arbitrary code on the system.


24) Use-after-free (CVE-ID: CVE-2026-112655)

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 when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted web page and execute arbitrary code on the system.


25) Use-after-free (CVE-ID: CVE-2026-112697)

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 when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted web page and execute arbitrary code on the system.


26) Out-of-bounds read (CVE-ID: CVE-2026-112699)

CWE-ID: CWE-125 - Out-of-bounds read

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 gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in WebKit. A remote attacker can trick the victim into visiting a specially crafted web page, trigger an out-of-bounds read error and read contents of memory on the system.


27) Input validation error (CVE-ID: CVE-2026-86985)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/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 insufficient validation of user-supplied input in WebKit. A remote attacker can trick the victim into visiting a specially crafted web page and crash the browser. 


28) Use-after-free (CVE-ID: CVE-2026-86986)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due to a use-after-free error when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser.


29) Type confusion (CVE-ID: CVE-2026-86974)

CWE-ID: CWE-843 - Type confusion

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 execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error in WebKit. A remote attacker can trick the victim into visiting a specially crafted web page, trigger a type confusion error and execute arbitrary code on the target system.



30) Use-after-free (CVE-ID: CVE-2026-112599)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due to a use-after-free error when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser.


31) Use-after-free (CVE-ID: CVE-2026-112693)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due to a use-after-free error when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser.


32) Use-after-free (CVE-ID: CVE-2026-113904)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due to a use-after-free error when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and crash the browser.


Remediation

Install update from vendor's website.

References