{
	"document":{
		"aggregate_severity":{
			"namespace":"https://nvd.nist.gov/vuln-metrics/cvss",
			"text":"Critical"
		},
		"category":"csaf_vex",
		"csaf_version":"2.0",
		"distribution":{
			"tlp":{
				"label":"WHITE",
				"url":"https:/www.first.org/tlp/"
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		},
		"lang":"en",
		"notes":[
			{
				"text":"firefox security update",
				"category":"general",
				"title":"Synopsis"
			},
			{
				"text":"An update for firefox is now available for openEuler-24.03-LTS-SP1",
				"category":"general",
				"title":"Summary"
			},
			{
				"text":"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\n\nSecurity Fix(es):\n\nMemory 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)\n\nIncorrect 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)\n\nMemory 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)",
				"category":"general",
				"title":"Description"
			},
			{
				"text":"An update for firefox is now available for master/openEuler-20.03-LTS-SP4/openEuler-22.03-LTS-SP4/openEuler-24.03-LTS/openEuler-24.03-LTS-Next/openEuler-24.03-LTS-SP1/openEuler-24.03-LTS-SP2/openEuler-24.03-LTS-SP3.\n\nopenEuler Security has rated this update as having a security impact of critical. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.",
				"category":"general",
				"title":"Topic"
			},
			{
				"text":"Critical",
				"category":"general",
				"title":"Severity"
			},
			{
				"text":"firefox",
				"category":"general",
				"title":"Affected Component"
			}
		],
		"publisher":{
			"issuing_authority":"openEuler security committee",
			"name":"openEuler",
			"namespace":"https://www.openeuler.org",
			"contact_details":"openeuler-security@openeuler.org",
			"category":"vendor"
		},
		"references":[
			{
				"summary":"openEuler-SA-2026-1875",
				"category":"self",
				"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1875"
			},
			{
				"summary":"CVE-2026-5731",
				"category":"self",
				"url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-5731&packageName=firefox"
			},
			{
				"summary":"CVE-2026-5732",
				"category":"self",
				"url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-5732&packageName=firefox"
			},
			{
				"summary":"CVE-2026-5734",
				"category":"self",
				"url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-5734&packageName=firefox"
			},
			{
				"summary":"nvd cve",
				"category":"external",
				"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5731"
			},
			{
				"summary":"nvd cve",
				"category":"external",
				"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5732"
			},
			{
				"summary":"nvd cve",
				"category":"external",
				"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5734"
			},
			{
				"summary":"openEuler-SA-2026-1875 vex file",
				"category":"self",
				"url":"https://repo.openeuler.org/security/data/csaf/advisories/2026/csaf-openeuler-sa-2026-1875.json"
			}
		],
		"title":"An update for firefox is now available for openEuler-24.03-LTS-SP1",
		"tracking":{
			"initial_release_date":"2026-04-11T22:05:20+08:00",
			"revision_history":[
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				"date":"2026-04-11T22:05:20+08:00",
				"engine":{
					"name":"openEuler CSAF Tool V1.0"
				}
			},
			"current_release_date":"2026-04-11T22:05:20+08:00",
			"id":"openEuler-SA-2026-1875",
			"version":"1.0.0",
			"status":"final"
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			"notes":[
				{
					"text":"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.",
					"category":"description",
					"title":"Vulnerability Description"
				}
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				{
					"product_ids":{"$ref":"$.vulnerabilities[0].product_status.fixed"},
					"details":"firefox security update",
					"category":"vendor_fix",
					"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1875"
				}
			],
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				{
					"cvss_v3":{
						"baseSeverity":"CRITICAL",
						"baseScore":9.8,
						"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
						"version":"3.1"
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					"details":"Critical",
					"category":"impact"
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			],
			"title":"CVE-2026-5731"
		},
		{
			"cve":"CVE-2026-5732",
			"notes":[
				{
					"text":"Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability affects Firefox < 149.0.2 and Firefox ESR < 140.9.1.",
					"category":"description",
					"title":"Vulnerability Description"
				}
			],
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					"product_ids":{"$ref":"$.vulnerabilities[0].product_status.fixed"},
					"details":"firefox security update",
					"category":"vendor_fix",
					"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1875"
				}
			],
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			"title":"CVE-2026-5732"
		},
		{
			"cve":"CVE-2026-5734",
			"notes":[
				{
					"text":"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.",
					"category":"description",
					"title":"Vulnerability Description"
				}
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					"details":"firefox security update",
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					"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1875"
				}
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					"details":"Critical",
					"category":"impact"
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			"title":"CVE-2026-5734"
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	]
}