OESA-2026-1878

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-1878

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-1878.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2026-1878

Upstream

CVE-2026-5731

CVE-2026-5732

CVE-2026-5734

Published

2026-04-11T14:05:05Z

Modified

2026-04-11T14:18:40.182846Z

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):

Memory safety bugs present in Firefox ESR 115.34.0, Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. 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 affects Firefox < 149.0.2, Firefox ESR < 115.34.1, and Firefox ESR < 140.9.1.(CVE-2026-5731)

Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability affects Firefox < 149.0.2 and Firefox ESR < 140.9.1.(CVE-2026-5732)

Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. 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 affects Firefox < 149.0.2 and Firefox ESR < 140.9.1.(CVE-2026-5734)

Database specific

{
    "severity": "Critical"
}

References

Affected packages

openEuler:22.03-LTS-SP4 / firefox

Package

Name: firefox
Purl: pkg:rpm/openEuler/firefox&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

140.9.1-1.oe2203sp4

Ecosystem specific

{
    "src": [
        "firefox-140.9.1-1.oe2203sp4.src.rpm"
    ],
    "aarch64": [
        "firefox-140.9.1-1.oe2203sp4.aarch64.rpm",
        "firefox-debuginfo-140.9.1-1.oe2203sp4.aarch64.rpm",
        "firefox-debugsource-140.9.1-1.oe2203sp4.aarch64.rpm"
    ],
    "x86_64": [
        "firefox-140.9.1-1.oe2203sp4.x86_64.rpm",
        "firefox-debuginfo-140.9.1-1.oe2203sp4.x86_64.rpm",
        "firefox-debugsource-140.9.1-1.oe2203sp4.x86_64.rpm"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-1878.json"