CVE-2025-8036

Thunderbird cached CORS preflight responses across IP address changes. This allowed circumventing CORS with DNS rebinding. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1960834	Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-56/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-59/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-61/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-63/	Vendor Advisory
https://www.kb.cert.org/vuls/id/652514

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox:::::esr:::*
	cpe:2.3:a:mozilla:firefox:::::-:::*
	cpe:2.3:a:mozilla:thunderbird:::::esr:::*
	cpe:2.3:a:mozilla:thunderbird:::::-:::*

History

No history.

Information

Published : 2025-07-22 21:15

Updated : 2026-06-17 10:06

NVD link : CVE-2025-8036

Mitre link : CVE-2025-8036

CVE.ORG link : CVE-2025-8036

JSON object : View

Products Affected

mozilla

thunderbird
firefox

CWE

CWE-350

Reliance on Reverse DNS Resolution for a Security-Critical Action

{"id": "CVE-2025-8036", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-8036", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2025-07-23T14:26:17.781838Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"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"}, "impactScore": 5.2, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security@mozilla.org", "affectedData": [{"vendor": "Mozilla", "product": "Firefox", "versions": [{"status": "unaffected", "version": "140.1", "versionType": "rpm", "lessThanOrEqual": "140.*"}, {"status": "unaffected", "version": "141", "versionType": "rpm", "lessThanOrEqual": "*"}]}, {"vendor": "Mozilla", "product": "Thunderbird", "versions": [{"status": "unaffected", "version": "140.1", "versionType": "rpm", "lessThanOrEqual": "140.*"}, {"status": "unaffected", "version": "141", "versionType": "rpm", "lessThanOrEqual": "*"}]}]}], "published": "2025-07-22T21:15:50.760", "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1960834", "tags": ["Permissions Required"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-56/", "tags": ["Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-59/", "tags": ["Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-61/", "tags": ["Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-63/", "tags": ["Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.kb.cert.org/vuls/id/652514", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-350"}]}], "descriptions": [{"lang": "en", "value": "Thunderbird cached CORS preflight responses across IP address changes. This allowed circumventing CORS with DNS rebinding. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1."}, {"lang": "es", "value": "Thunderbird almacen\u00f3 en cach\u00e9 las respuestas de preflight de CORS tras los cambios de direcci\u00f3n IP. Esto permiti\u00f3 eludir CORS mediante revinculaci\u00f3n de DNS. Esta vulnerabilidad afecta a Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141 y Thunderbird < 140.1."}], "lastModified": "2026-06-17T10:06:11.173", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*", "vulnerable": true, "matchCriteriaId": "B4D5C090-29D0-4488-843B-6CAAA287CF91", "versionEndExcluding": "140.1.0"}, {"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "8684A46E-D70A-4830-8971-A6DCC360F422", "versionEndExcluding": "141.0"}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*", "vulnerable": true, "matchCriteriaId": "F6B4AF14-07DC-4941-9531-9CFC6CE00567", "versionEndExcluding": "140.1.0"}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "95D506DD-BD9B-4D90-802F-5BE673F1CF14", "versionEndExcluding": "141.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@mozilla.org"}