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OESA-2026-2392 (CVE-2026-8388)

Vulnerability from osv_openeuler – Published: 2026-05-22 11:11 – Updated: 2026-08-06 11:11 – Source website
VLAI
Summary
firefox security update
Details

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability. %if 0 %global moz_debug_prefix /lib/debug %global moz_debug_dir /lib/debug/ %global uname_m %(uname -m) %global symbols_file_name -.en-US.-%(uname.crashreporter-symbols.zip %global symbols_file_path /lib/debug//-.en-US.-%(uname.crashreporter-symbols.zip %global _find_debuginfo_opts -p /lib/debug//-.en-US.-%(uname.crashreporter-symbols.zip -o debugcrashreporter.list %global crashreporter_pkg_name mozilla-crashreporter--debuginfo

Security Fix(es):

A critical vulnerability has been discovered in Mozilla Firefox browser versions up to 150.0.2, classified as CWE-119 buffer error. The vulnerability allows the product to read from or write to memory locations outside the intended boundary of the buffer when performing operations on a memory buffer. This vulnerability affects confidentiality, integrity, and availability. Upgrading to version 150.0.3 eliminates this vulnerability.(CVE-2026-8388)

A vulnerability was found in Mozilla Firefox up to 150.0.2 (Web Browser). It has been declared as critical. As an impact it is known to affect confidentiality, integrity, and availability. Upgrading to version 150.0.3 eliminates this vulnerability.(CVE-2026-8391)

A sandbox escape vulnerability exists in the Profile Backup component of Mozilla Firefox. This vulnerability affects Firefox versions up to 150.0.2 and was fixed in version 150.0.3. An attacker could potentially exploit this vulnerability to bypass sandbox protections, impacting the confidentiality, integrity, and availability of the system.(CVE-2026-8401)

Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, and Firefox ESR 140.11.(CVE-2026-8946)

Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, and Firefox ESR 140.11.(CVE-2026-8947)

Integer overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8949)

Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8950)

Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, and Firefox ESR 140.11.(CVE-2026-8953)

Incorrect boundary conditions, integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8954)

Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8955)

Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8956)

Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8957)

Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8958)

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8959)

Spoofing issue in the Form Autofill component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8961)

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8962)

Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8968)

Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8970)

Memory safety bugs present in Firefox ESR 140.10 and Firefox 150. 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 151 and Firefox ESR 140.11.(CVE-2026-8974)

Memory safety bugs present in Firefox ESR 115.35, Firefox ESR 140.10 and Firefox 150. 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 151, Firefox ESR 115.36, and Firefox ESR 140.11.(CVE-2026-8975)

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "firefox-140.11.0-1.oe2403sp3.aarch64.rpm",
          "firefox-debuginfo-140.11.0-1.oe2403sp3.aarch64.rpm",
          "firefox-debugsource-140.11.0-1.oe2403sp3.aarch64.rpm"
        ],
        "src": [
          "firefox-140.11.0-1.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "firefox-140.11.0-1.oe2403sp3.x86_64.rpm",
          "firefox-debuginfo-140.11.0-1.oe2403sp3.x86_64.rpm",
          "firefox-debugsource-140.11.0-1.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "firefox",
        "purl": "pkg:rpm/openEuler/firefox\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "140.11.0-1.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Critical"
  },
  "details": "Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability. %if 0 %global moz_debug_prefix /lib/debug %global moz_debug_dir /lib/debug/ %global uname_m %(uname -m) %global symbols_file_name -.en-US.-%(uname.crashreporter-symbols.zip %global symbols_file_path /lib/debug//-.en-US.-%(uname.crashreporter-symbols.zip %global _find_debuginfo_opts -p /lib/debug//-.en-US.-%(uname.crashreporter-symbols.zip -o debugcrashreporter.list %global crashreporter_pkg_name mozilla-crashreporter--debuginfo\r\n\r\nSecurity Fix(es):\n\nA critical vulnerability has been discovered in Mozilla Firefox browser versions up to 150.0.2, classified as CWE-119 buffer error. The vulnerability allows the product to read from or write to memory locations outside the intended boundary of the buffer when performing operations on a memory buffer. This vulnerability affects confidentiality, integrity, and availability. Upgrading to version 150.0.3 eliminates this vulnerability.(CVE-2026-8388)\n\nA vulnerability was found in Mozilla Firefox up to 150.0.2 (Web Browser). It has been declared as critical. As an impact it is known to affect confidentiality, integrity, and availability. Upgrading to version 150.0.3 eliminates this vulnerability.(CVE-2026-8391)\n\nA sandbox escape vulnerability exists in the Profile Backup component of Mozilla Firefox. This vulnerability affects Firefox versions up to 150.0.2 and was fixed in version 150.0.3. An attacker could potentially exploit this vulnerability to bypass sandbox protections, impacting the confidentiality, integrity, and availability of the system.(CVE-2026-8401)\n\nIncorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, and Firefox ESR 140.11.(CVE-2026-8946)\n\nUse-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, and Firefox ESR 140.11.(CVE-2026-8947)\n\nInteger overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8949)\n\nSame-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8950)\n\nSandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, and Firefox ESR 140.11.(CVE-2026-8953)\n\nIncorrect boundary conditions, integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8954)\n\nPrivilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8955)\n\nInteger overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8956)\n\nPrivilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8957)\n\nInformation disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8958)\n\nSandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8959)\n\nSpoofing issue in the Form Autofill component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8961)\n\nMitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.(CVE-2026-8962)\n\nDenial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8968)\n\nPrivilege escalation in the Security component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.(CVE-2026-8970)\n\nMemory safety bugs present in Firefox ESR 140.10 and Firefox 150. 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 151 and Firefox ESR 140.11.(CVE-2026-8974)\n\nMemory safety bugs present in Firefox ESR 115.35, Firefox ESR 140.10 and Firefox 150. 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 151, Firefox ESR 115.36, and Firefox ESR 140.11.(CVE-2026-8975)",
  "id": "OESA-2026-2392",
  "modified": "2026-08-06T11:11:21Z",
  "published": "2026-05-22T11:11:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2392"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8388"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8391"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8401"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8946"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8947"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8949"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8950"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8953"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8954"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8955"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8956"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8957"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8958"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8959"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8961"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8962"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8968"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8970"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8974"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8975"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "firefox security update",
  "upstream": [
    "CVE-2026-8388",
    "CVE-2026-8391",
    "CVE-2026-8401",
    "CVE-2026-8946",
    "CVE-2026-8947",
    "CVE-2026-8949",
    "CVE-2026-8950",
    "CVE-2026-8953",
    "CVE-2026-8954",
    "CVE-2026-8955",
    "CVE-2026-8956",
    "CVE-2026-8957",
    "CVE-2026-8958",
    "CVE-2026-8959",
    "CVE-2026-8961",
    "CVE-2026-8962",
    "CVE-2026-8968",
    "CVE-2026-8970",
    "CVE-2026-8974",
    "CVE-2026-8975"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.