OESA-2026-2106

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-2106
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-2106.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-2106
Upstream
  • CVE-2026-6746
  • CVE-2026-6747
  • CVE-2026-6748
  • CVE-2026-6749
  • CVE-2026-6750
  • CVE-2026-6751
  • CVE-2026-6752
  • CVE-2026-6753
  • CVE-2026-6754
  • CVE-2026-6757
  • CVE-2026-6759
  • CVE-2026-6761
  • CVE-2026-6762
  • CVE-2026-6763
  • CVE-2026-6764
  • CVE-2026-6765
  • CVE-2026-6766
  • CVE-2026-6767
  • CVE-2026-6769
  • CVE-2026-6770
  • CVE-2026-6771
  • CVE-2026-6772
  • CVE-2026-6776
  • CVE-2026-6785
  • CVE-2026-6786
Published
2026-04-25T05:50:36Z
Modified
2026-04-25T06:05:14.894854Z
Summary
firefox security update
Details

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability. %if 0 %global mozdebugprefix /lib/debug %global mozdebugdir /lib/debug/ %global unamem %(uname -m) %global symbolsfilename -.en-US.-%(uname.crashreporter-symbols.zip %global symbolsfilepath /lib/debug//-.en-US.-%(uname.crashreporter-symbols.zip %global finddebuginfoopts -p /lib/debug//-.en-US.-%(uname.crashreporter-symbols.zip -o debugcrashreporter.list %global crashreporterpkgname mozilla-crashreporter--debuginfo

Security Fix(es):

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10.(CVE-2026-6746)

Use-after-free vulnerability in the WebRTC component of Firefox. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6747)

Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6748)

Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10.(CVE-2026-6749)

Privilege escalation vulnerability in the WebRender graphics component of Firefox browser. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10.(CVE-2026-6750)

An uninitialized memory vulnerability exists in the Audio/Video: Web Codecs component of Firefox browser. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6751)

Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10.(CVE-2026-6752)

Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.(CVE-2026-6753)

A use-after-free vulnerability exists in the JavaScript Engine component of Mozilla Firefox. An attacker could potentially exploit this vulnerability to execute arbitrary code or cause the application to crash. This vulnerability has been fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10.(CVE-2026-6754)

Invalid pointer in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.(CVE-2026-6757)

Use-after-free in the Widget: Cocoa component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6759)

Privilege escalation in the Networking component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6761)

Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.(CVE-2026-6762)

Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6763)

Incorrect boundary conditions in the DOM: Device Interfaces component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6764)

Information disclosure in the Form Autofill component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6765)

Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6766)

Other issue in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10.(CVE-2026-6767)

Privilege escalation in the Debugger component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6769)

Other issue in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6770)

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6771)

Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10.(CVE-2026-6772)

Incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6776)

Memory safety bugs present in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10.(CVE-2026-6785)

Memory safety bugs present in Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.(CVE-2026-6786)

Database specific 
{
    "severity": "Critical"
}
References

Affected packages

openEuler:24.03-LTS / firefox

Package

Name
firefox
Purl
pkg:rpm/openEuler/firefox&distro=openEuler-24.03-LTS

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
140.10.0-1.oe2403

Ecosystem specific 

{
    "src": [
        "firefox-140.10.0-1.oe2403.src.rpm"
    ],
    "aarch64": [
        "firefox-140.10.0-1.oe2403.aarch64.rpm",
        "firefox-debuginfo-140.10.0-1.oe2403.aarch64.rpm",
        "firefox-debugsource-140.10.0-1.oe2403.aarch64.rpm"
    ],
    "x86_64": [
        "firefox-140.10.0-1.oe2403.x86_64.rpm",
        "firefox-debuginfo-140.10.0-1.oe2403.x86_64.rpm",
        "firefox-debugsource-140.10.0-1.oe2403.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-2106.json"