CVE-2026-2805

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{"bugzilla": {"description": "firefox: thunderbird: Invalid pointer in the DOM: Core & HTML component", "id": "2442285", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2442285"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "status": "draft"}, "details": ["Invalid pointer in the DOM: Core & HTML component. This vulnerability affects Firefox < 148 and Thunderbird < 148."], "name": "CVE-2026-2805", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "rhel10/firefox-flatpak", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "rhel10/thunderbird-flatpak", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-02-24T13:33:32Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-2805\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-2805\nhttps://www.mozilla.org/security/advisories/mfsa2026-13/#CVE-2026-2805\nhttps://www.mozilla.org/security/advisories/mfsa2026-16/#CVE-2026-2805"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,148)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Firefox", "source": "cna", "vendor": "Mozilla"}, "product": "firefox", "vendor": "mozilla"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,148)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Thunderbird", "source": "cna", "vendor": "Mozilla"}, "product": "thunderbird", "vendor": "mozilla"}], "analysis": {"en": {"generated_at": "2026-04-15T16:02:56.712252+00:00", "value": {"mitigation_remediation": ["Upgrade Mozilla Firefox to version 148 or later", "Upgrade Mozilla Thunderbird to version 148 or later", "If an immediate upgrade is not possible, restrict the execution of untrusted web content and monitor for the release of official security patches"], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Mozilla Firefox versions prior to 148 and Mozilla Thunderbird versions prior to 148 are affected. The vulnerability is present in all builds of both browsers that use the vulnerable DOM implementation, as reflected by the CPE entries for Firefox and Thunderbird.", "description_and_impact": "An invalid pointer in the core and HTML components of the DOM can lead to memory corruption that may allow an attacker to execute arbitrary code on the affected system. The flaw is categorized as CWE\u2011824, which indicates an unrecovered invalid pointer usage that can be exploited for compromising application integrity.", "risk_and_exploitability": "The CVSS score of 9.8 reflects severe potential impact and the very low EPSS (<1%) suggests a modest likelihood of exploitation at this time. The vulnerability is not listed in the CISA KEV catalog, indicating no confirmed widespread exploitation yet. The likely attack vector is delivering malicious web content or HTML emails that trigger the invalid pointer usage, potentially enabling remote code execution or privilege escalation. Successful exploitation would compromise confidentiality, integrity, and availability of the victim\u2019s data and system."}}}}, "created": "2026-02-25T11:39:06.263453+00:00", "updated": "2026-04-15T17:00:07.088931+00:00", "vendors": ["mozilla", "mozilla$PRODUCT$firefox", "mozilla$PRODUCT$thunderbird"]}