SB2026051356 - Anolis OS update for firefox

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Main Vulnerability Database SB2026051356

SB2026051356 - Anolis OS update for firefox

Published: May 13, 2026

Security Bulletin ID SB2026051356
CSH Severity
High
Patch available
YES
Number of vulnerabilities 23
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

High 35% Medium 43% Low 22%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 23 vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2026-6746)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 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/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to use-after-free in the DOM: Core & HTML component when rendering crafted web content. A remote attacker can cause the browser to process specially crafted content to execute arbitrary code.

User interaction is required to visit a crafted website or URL.


2) Use-after-free (CVE-ID: CVE-2026-6747)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 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/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to use-after-free in the WebRTC component when handling crafted web content. A remote attacker can cause the browser to process specially crafted content to execute arbitrary code.

User interaction is required to visit a specially crafted website or URL.


3) Use of uninitialized resource (CVE-ID: CVE-2026-6748)

CWE-ID: CWE-908 - Use of Uninitialized Resource

CVSSv4: 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/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to uninitialized memory in the Audio/Video: Web Codecs component when processing crafted web content. A remote attacker can cause the browser to process specially crafted content to execute arbitrary code.

User interaction is required to visit a specially crafted website or URL.


4) Use of uninitialized resource (CVE-ID: CVE-2026-6749)

CWE-ID: CWE-908 - Use of Uninitialized Resource

CVSSv4: 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/E:U/U:Green


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to uninitialized memory in the Graphics: Canvas2D component when rendering crafted web content. A remote attacker can cause the browser to process specially crafted content to disclose sensitive information.

User interaction is required to visit a crafted website or URL.


5) Improper access control (CVE-ID: CVE-2026-6750)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 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/E:U/U:Amber


The vulnerability allows a remote attacker to escalate privileges.

The vulnerability exists due to improper access control in the Graphics: WebRender component when rendering crafted web content. A remote attacker can cause the browser to process specially crafted content to escalate privileges.

User interaction is required to visit a crafted website or URL.


6) Use of uninitialized resource (CVE-ID: CVE-2026-6751)

CWE-ID: CWE-908 - Use of Uninitialized Resource

CVSSv4: 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/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to uninitialized memory in the Audio/Video: Web Codecs component when processing crafted web content. A remote attacker can cause the browser to process specially crafted content to execute arbitrary code.


7) Out-of-bounds read (CVE-ID: CVE-2026-6752)

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

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to incorrect boundary conditions in the WebRTC component when processing crafted web content. A remote attacker can cause the browser to process specially crafted content to cause a denial of service.

User interaction is required to visit a crafted website or URL.


8) Buffer overflow (CVE-ID: CVE-2026-6753)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to incorrect boundary conditions in the WebRTC component when handling crafted web content. A remote attacker can cause the browser to process specially crafted content to cause a denial of service.

User interaction is required to visit a specially crafted website or URL.


9) Use-after-free (CVE-ID: CVE-2026-6754)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 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/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to use-after-free in the JavaScript Engine component when processing crafted web content. A remote attacker can cause the browser to process specially crafted content to execute arbitrary code.

User interaction is required to visit a crafted website or URL.


10) NULL pointer dereference (CVE-ID: CVE-2026-6757)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to invalid pointer usage in the JavaScript: WebAssembly component when processing crafted WebAssembly content. A remote attacker can cause the browser to process specially crafted content to cause a denial of service.

User interaction is required to visit a specially crafted website or URL.


11) Improper access control (CVE-ID: CVE-2026-6761)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to escalate privileges.

The vulnerability exists due to improper access control in the Networking component when processing crafted web content. A remote attacker can cause the browser to process specially crafted content to escalate privileges.

User interaction is required to visit a specially crafted website or URL.


12) Input validation error (CVE-ID: CVE-2026-6762)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 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/E:U/U:Clear


The vulnerability allows a remote attacker to spoof the user interface.

The vulnerability exists due to improper input validation in the DOM: Core & HTML component when rendering crafted web content. A remote attacker can cause the browser to process specially crafted content to spoof the user interface.

User interaction is required to visit a crafted website or URL.


13) Protection Mechanism Failure (CVE-ID: CVE-2026-6763)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: 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/E:U/U:Green


The vulnerability allows a remote attacker to bypass a security restriction.

The vulnerability exists due to improper restriction enforcement in the File Handling component when processing crafted file handling operations. A remote attacker can trigger the vulnerable behavior to bypass a security restriction.


14) Buffer overflow (CVE-ID: CVE-2026-6764)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to incorrect boundary conditions in the DOM: Device Interfaces component when processing crafted web content. A remote attacker can cause the browser to process specially crafted content to cause a denial of service.

User interaction is required to visit a specially crafted website or URL.


15) Information disclosure (CVE-ID: CVE-2026-6765)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: 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/E:U/U:Green


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to improper access control in the Form Autofill component when handling autofill data in crafted web content. A remote attacker can cause the browser to expose autofill-related information to disclose sensitive information.

User interaction is required to visit a specially crafted website or URL.


16) Improper access control (CVE-ID: CVE-2026-6769)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to escalate privileges.

The vulnerability exists due to improper access control in the Debugger component when processing crafted web content. A remote attacker can trigger the vulnerable behavior to escalate privileges.

User interaction is required to visit a specially crafted website or URL.


17) Input validation error (CVE-ID: CVE-2026-6770)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input handling in the Storage: IndexedDB component when processing crafted web content. A remote attacker can cause the browser to process specially crafted content to cause a denial of service.

User interaction is required to visit a specially crafted website or URL.


18) Protection Mechanism Failure (CVE-ID: CVE-2026-6771)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: 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/E:U/U:Green


The vulnerability allows a remote attacker to bypass a security restriction.

The vulnerability exists due to improper restriction enforcement in the DOM: Security component when processing crafted web content. A remote attacker can trigger the vulnerable behavior to bypass a security restriction.

User interaction is required to visit a specially crafted website or URL.


19) Out-of-bounds read (CVE-ID: CVE-2026-6772)

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

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to incorrect boundary conditions in the Libraries component in NSS when processing crafted input. A remote attacker can cause the browser to process specially crafted content to cause a denial of service.

User interaction is required to visit a crafted website or URL.


20) Buffer overflow (CVE-ID: CVE-2026-6776)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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/E:U/U:Clear


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to incorrect boundary conditions in the WebRTC: Networking component when handling crafted web content. A remote attacker can cause the browser to process specially crafted content to cause a denial of service.

User interaction is required to visit a specially crafted website or URL.


21) Input validation error (CVE-ID: CVE-2026-6777)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to an unspecified error in the Networking: DNS component. A remote attacker can bypass implemented security restrictions. 


22) Input validation error (CVE-ID: CVE-2026-6779)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due an unspecified error in the JavaScript Engine component. A remote attacker can bypass implemented security restrictions.


23) Input validation error (CVE-ID: CVE-2026-6781)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to crash the browser.

The vulnerability exists due an unspecified error in the Audio/Video: Playback component. A remote attacker can trick the victim into visiting a specially crafted web page and crash the browser. 


Remediation

Install update from vendor's website.

References