{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-8029", "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "state": "PUBLISHED", "assignerShortName": "mozilla", "dateReserved": "2025-07-22T10:13:51.239Z", "datePublished": "2025-07-22T20:49:24.898Z", "dateUpdated": "2026-04-13T14:26:50.157Z"}, "containers": {"cna": {"affected": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"status": "unaffected", "version": "128.13", "lessThanOrEqual": "128.*", "versionType": "rpm"}, {"status": "unaffected", "version": "140.1", "lessThanOrEqual": "140.*", "versionType": "rpm"}, {"status": "unaffected", "version": "141", "lessThanOrEqual": "*", "versionType": "rpm"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"status": "unaffected", "version": "128.13", "lessThanOrEqual": "128.*", "versionType": "rpm"}, {"status": "unaffected", "version": "140.1", "lessThanOrEqual": "140.*", "versionType": "rpm"}, {"status": "unaffected", "version": "141", "lessThanOrEqual": "*", "versionType": "rpm"}]}], "descriptions": [{"lang": "en", "value": "Thunderbird executed `javascript:` URLs when used in `object` and `embed` tags. This vulnerability was fixed in Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Thunderbird executed <code>javascript:</code> URLs when used in <code>object</code> and <code>embed</code> tags. This vulnerability was fixed in Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1."}]}], "title": "javascript: URLs executed on object and embed tags", "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1928021"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-56/"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-58/"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-59/"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-61/"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-62/"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-63/"}], "credits": [{"lang": "en", "value": "Mirko Brodesser"}], "providerMetadata": {"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla", "dateUpdated": "2026-04-13T14:26:50.157Z"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-80", "lang": "en", "description": "CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2025-07-23T14:29:37.560314Z", "id": "CVE-2025-8029", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-11-04T15:57:41.778Z"}}, {"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:07:46.877Z"}}]}}

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{"affected_release": [{"advisory": "RHSA-2025:11797", "cpe": "cpe:/o:redhat:enterprise_linux:10.0", "package": "firefox-0:128.13.0-1.el10_0", "product_name": "Red Hat Enterprise Linux 10", "release_date": "2025-07-28T00:00:00Z"}, {"advisory": "RHSA-2025:11747", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:128.13.0-1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-07-24T00:00:00Z"}, {"advisory": "RHSA-2025:11748", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "firefox-0:128.13.0-1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-07-24T00:00:00Z"}], "bugzilla": {"description": "firefox: thunderbird: javascript: URLs executed on object and embed tags", "id": "2382720", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2382720"}, "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": "verified"}, "cwe": "CWE-80", "details": ["Thunderbird executed `javascript:` URLs when used in `object` and `embed` tags. This vulnerability affects Firefox < 141, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.", "A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:\nFirefox executed <code>javascript:</code> URLs when used in <code>object</code> and <code>embed</code> tags."], "name": "CVE-2025-8029", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "rhel10/firefox-flatpak", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "rhel10/thunderbird-flatpak", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-07-22T20:49:24Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-8029\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-8029\nhttps://www.mozilla.org/security/advisories/mfsa2025-58/#CVE-2025-8029\nhttps://www.mozilla.org/security/advisories/mfsa2025-62/#CVE-2025-8029"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.", "threat_severity": "Moderate"}

{"analysis": {"en": {"generated_at": "2026-04-20T16:55:42.573189+00:00", "value": {"mitigation_remediation": ["Upgrade Firefox to version 141 or newer, or to Firefox ESR 128.13/140.1.", "Upgrade Thunderbird to version 141 or newer, or to Thunderbird ESR 128.13/140.1.", "Determine if the installed packages come from Red\u00a0Hat Enterprise Linux\u00a08,\u00a09, or\u00a010; if so, install the vendor\u2019s security update that contains the fixed browser version.", "If an immediate update is not possible, block execution of `javascript:` URLs in `object` and `embed` tags by applying a content\u2011security\u2011policy or using a browser extension that enforces the restriction."], "summary": {"action": "Immediate Patch", "impact": "Arbitrary JavaScript Execution"}, "threat_synthesis": {"affected_systems": "This issue affects Mozilla Firefox version 141 and earlier, Firefox ESR 128.13 and ESR 140.1, as well as Mozilla Thunderbird 141 and earlier, Thunderbird ESR 128.13 and ESR 140.1. Red Hat Enterprise Linux 8, 9, and 10 packages that include these browsers are also potentially impacted until they apply the corresponding updates.", "description_and_impact": "Thunderbird and Firefox execute `javascript:` URLs specified within `object` and `embed` tags, permitting an attacker to run arbitrary JavaScript code when the user opens a malicious email or web page. The flaw is a cross\u2011site scripting vulnerability (CWE\u201180) that can lead to data theft, credential compromise, or further malware delivery.", "risk_and_exploitability": "The vulnerability has a CVSS score of 8.1, indicating high severity, while the EPSS score of less than 1% suggests a very low current exploitation probability. It is not listed in the CISA KEV catalog. Attackers can exploit the bug by embedding a `javascript:` URL in an `object` or `embed` tag within an email or web page; when a user opens it, the browser executes the script with the privileges of the user. This client\u2011side attack does not require additional network access or special user privileges beyond normal usage of the affected applications."}}}}, "created": "2025-07-23T17:36:03.762611+00:00", "updated": "2026-04-20T17:00:12.745610+00:00", "vendors": ["mozilla", "mozilla$PRODUCT$firefox", "mozilla$PRODUCT$firefox_esr", "mozilla$PRODUCT$thunderbird"]}