alsa-2026:2271
Vulnerability from osv_almalinux
Published
2026-02-09 00:00
Modified
2026-02-09 11:39
Summary
Important: firefox security update
Details

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

Security Fix(es):

  • firefox: Spoofing issue in the Downloads Panel component (CVE-2025-14327)
  • firefox: Use-after-free in the JavaScript: GC component (CVE-2026-0885)
  • firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147 (CVE-2026-0891)
  • firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component (CVE-2026-0878)
  • firefox: Use-after-free in the IPC component (CVE-2026-0882)
  • firefox: Use-after-free in the JavaScript Engine component (CVE-2026-0884)
  • firefox: Information disclosure in the Networking component (CVE-2026-0883)
  • firefox: Mitigation bypass in the DOM: Security component (CVE-2026-0877)
  • firefox: Spoofing issue in the DOM: Copy & Paste and Drag & Drop component (CVE-2026-0890)
  • firefox: Clickjacking issue, information disclosure in the PDF Viewer component (CVE-2026-0887)
  • firefox: Sandbox escape due to incorrect boundary conditions in the Graphics component (CVE-2026-0879)
  • firefox: Sandbox escape due to integer overflow in the Graphics component (CVE-2026-0880)
  • firefox: Incorrect boundary conditions in the Graphics component (CVE-2026-0886)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "firefox"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "140.7.0-1.el10_1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.  \n\nSecurity Fix(es):  \n\n  * firefox: Spoofing issue in the Downloads Panel component (CVE-2025-14327)\n  * firefox: Use-after-free in the JavaScript: GC component (CVE-2026-0885)\n  * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147 (CVE-2026-0891)\n  * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component (CVE-2026-0878)\n  * firefox: Use-after-free in the IPC component (CVE-2026-0882)\n  * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-0884)\n  * firefox: Information disclosure in the Networking component (CVE-2026-0883)\n  * firefox: Mitigation bypass in the DOM: Security component (CVE-2026-0877)\n  * firefox: Spoofing issue in the DOM: Copy \u0026 Paste and Drag \u0026 Drop component (CVE-2026-0890)\n  * firefox: Clickjacking issue, information disclosure in the PDF Viewer component (CVE-2026-0887)\n  * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics component (CVE-2026-0879)\n  * firefox: Sandbox escape due to integer overflow in the Graphics component (CVE-2026-0880)\n  * firefox: Incorrect boundary conditions in the Graphics component (CVE-2026-0886)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:2271",
  "modified": "2026-02-09T11:39:07Z",
  "published": "2026-02-09T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:2271"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-14327"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0877"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0878"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0879"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0880"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0882"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0883"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0884"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0885"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0886"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0887"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0890"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0891"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2420507"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2428961"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2428963"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2428965"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2428966"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2428967"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2428968"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2428969"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2428971"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2428972"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2428973"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2428975"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2428978"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2026-2271.html"
    }
  ],
  "related": [
    "CVE-2025-14327",
    "CVE-2026-0885",
    "CVE-2026-0891",
    "CVE-2026-0878",
    "CVE-2026-0882",
    "CVE-2026-0884",
    "CVE-2026-0883",
    "CVE-2026-0877",
    "CVE-2026-0890",
    "CVE-2026-0887",
    "CVE-2026-0879",
    "CVE-2026-0880",
    "CVE-2026-0886"
  ],
  "summary": "Important: firefox security update"
}


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  • 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.
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  • 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.