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.

zetlyn/cve-nvd vulnerability cve CVE-2025-8036 cpe cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* cpe cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* cpe cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:* cpe cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:* known 2025-07-22

https://nvd.nist.gov/vuln/detail/CVE-2025-8036

Properties

cvss	8.1 receipt Source NVD Its words `8.1` Read by `field:cve.metrics.cvssMetricV31[].cvssData.baseScore` Said since 2026-10-02 12:00 UTC Last answered 2026-10-05 12:24 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "product": "Firefox", "vendor": "Mozilla", "versions": [ { "lessThanOrEqual": "140.", "status": "unaffected", "version": "140.1", "versionType": "rpm" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "141", "versionType": "rpm" } ] }, { "product": "Thunderbird", "vendor": "Mozilla", "versions": [ { "lessThanOrEqual": "140.", "status": "unaffected", "version": "140.1", "versionType": "rpm" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "141", "versionType": "rpm" } ] } ], "source": "security@mozilla.org" } ], "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:a:mozilla:firefox:::::esr:::", "matchCriteriaId": "B4D5C090-29D0-4488-843B-6CAAA287CF91", "versionEndExcluding": "140.1.0", "vulnerable": true }, { "criteria": "cpe:2.3:a:mozilla:firefox:::::-:::", "matchCriteriaId": "8684A46E-D70A-4830-8971-A6DCC360F422", "versionEndExcluding": "141.0", "vulnerable": true }, { "criteria": "cpe:2.3:a:mozilla:thunderbird:::::esr:::", "matchCriteriaId": "F6B4AF14-07DC-4941-9531-9CFC6CE00567", "versionEndExcluding": "140.1.0", "vulnerable": true }, { "criteria": "cpe:2.3:a:mozilla:thunderbird:::::-:::", "matchCriteriaId": "95D506DD-BD9B-4D90-802F-5BE673F1CF14", "versionEndExcluding": "141.0", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "cveTags": [], "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 almacenó en caché las respuestas de preflight de CORS tras los cambios de dirección IP. Esto permitió eludir CORS mediante revinculación de DNS. Esta vulnerabilidad afecta a Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141 y Thunderbird < 140.1." } ], "id": "CVE-2025-8036", "lastModified": "2026-09-30T18:10:00.190", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1" }, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary" } ], "ssvcV203": [ { "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": { "id": "CVE-2025-8036", "options": [ { "exploitation": "none" }, { "automatable": "no" }, { "technicalImpact": "total" } ], "role": "CISA Coordinator", "timestamp": "2025-07-23T14:26:17.781838Z", "version": "2.0.3" } } ] }, "published": "2025-07-22T21:15:50.760", "references": [ { "source": "security@mozilla.org", "tags": [ "Permissions Required" ], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1960834" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-56/" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-59/" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-61/" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-63/" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.kb.cert.org/vuls/id/652514" } ], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-350" } ], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary" } ] } }
product	Firefox receipt Source NVD Its words `Firefox` Read by `field:cve.affected[].affectedData[].product` Said since 2026-10-02 12:00 UTC Last answered 2026-10-05 12:24 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "product": "Firefox", "vendor": "Mozilla", "versions": [ { "lessThanOrEqual": "140.", "status": "unaffected", "version": "140.1", "versionType": "rpm" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "141", "versionType": "rpm" } ] }, { "product": "Thunderbird", "vendor": "Mozilla", "versions": [ { "lessThanOrEqual": "140.", "status": "unaffected", "version": "140.1", "versionType": "rpm" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "141", "versionType": "rpm" } ] } ], "source": "security@mozilla.org" } ], "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:a:mozilla:firefox:::::esr:::", "matchCriteriaId": "B4D5C090-29D0-4488-843B-6CAAA287CF91", "versionEndExcluding": "140.1.0", "vulnerable": true }, { "criteria": "cpe:2.3:a:mozilla:firefox:::::-:::", "matchCriteriaId": "8684A46E-D70A-4830-8971-A6DCC360F422", "versionEndExcluding": "141.0", "vulnerable": true }, { "criteria": "cpe:2.3:a:mozilla:thunderbird:::::esr:::", "matchCriteriaId": "F6B4AF14-07DC-4941-9531-9CFC6CE00567", "versionEndExcluding": "140.1.0", "vulnerable": true }, { "criteria": "cpe:2.3:a:mozilla:thunderbird:::::-:::", "matchCriteriaId": "95D506DD-BD9B-4D90-802F-5BE673F1CF14", "versionEndExcluding": "141.0", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "cveTags": [], "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 almacenó en caché las respuestas de preflight de CORS tras los cambios de dirección IP. Esto permitió eludir CORS mediante revinculación de DNS. Esta vulnerabilidad afecta a Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141 y Thunderbird < 140.1." } ], "id": "CVE-2025-8036", "lastModified": "2026-09-30T18:10:00.190", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1" }, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary" } ], "ssvcV203": [ { "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": { "id": "CVE-2025-8036", "options": [ { "exploitation": "none" }, { "automatable": "no" }, { "technicalImpact": "total" } ], "role": "CISA Coordinator", "timestamp": "2025-07-23T14:26:17.781838Z", "version": "2.0.3" } } ] }, "published": "2025-07-22T21:15:50.760", "references": [ { "source": "security@mozilla.org", "tags": [ "Permissions Required" ], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1960834" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-56/" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-59/" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-61/" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-63/" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.kb.cert.org/vuls/id/652514" } ], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-350" } ], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary" } ] } }
status	Modified receipt Source NVD Its words `Modified` Read by `field:cve.vulnStatus` Said since 2026-10-02 12:00 UTC Last answered 2026-10-05 12:24 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "product": "Firefox", "vendor": "Mozilla", "versions": [ { "lessThanOrEqual": "140.", "status": "unaffected", "version": "140.1", "versionType": "rpm" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "141", "versionType": "rpm" } ] }, { "product": "Thunderbird", "vendor": "Mozilla", "versions": [ { "lessThanOrEqual": "140.", "status": "unaffected", "version": "140.1", "versionType": "rpm" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "141", "versionType": "rpm" } ] } ], "source": "security@mozilla.org" } ], "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:a:mozilla:firefox:::::esr:::", "matchCriteriaId": "B4D5C090-29D0-4488-843B-6CAAA287CF91", "versionEndExcluding": "140.1.0", "vulnerable": true }, { "criteria": "cpe:2.3:a:mozilla:firefox:::::-:::", "matchCriteriaId": "8684A46E-D70A-4830-8971-A6DCC360F422", "versionEndExcluding": "141.0", "vulnerable": true }, { "criteria": "cpe:2.3:a:mozilla:thunderbird:::::esr:::", "matchCriteriaId": "F6B4AF14-07DC-4941-9531-9CFC6CE00567", "versionEndExcluding": "140.1.0", "vulnerable": true }, { "criteria": "cpe:2.3:a:mozilla:thunderbird:::::-:::", "matchCriteriaId": "95D506DD-BD9B-4D90-802F-5BE673F1CF14", "versionEndExcluding": "141.0", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "cveTags": [], "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 almacenó en caché las respuestas de preflight de CORS tras los cambios de dirección IP. Esto permitió eludir CORS mediante revinculación de DNS. Esta vulnerabilidad afecta a Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141 y Thunderbird < 140.1." } ], "id": "CVE-2025-8036", "lastModified": "2026-09-30T18:10:00.190", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1" }, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary" } ], "ssvcV203": [ { "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": { "id": "CVE-2025-8036", "options": [ { "exploitation": "none" }, { "automatable": "no" }, { "technicalImpact": "total" } ], "role": "CISA Coordinator", "timestamp": "2025-07-23T14:26:17.781838Z", "version": "2.0.3" } } ] }, "published": "2025-07-22T21:15:50.760", "references": [ { "source": "security@mozilla.org", "tags": [ "Permissions Required" ], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1960834" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-56/" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-59/" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-61/" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-63/" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.kb.cert.org/vuls/id/652514" } ], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-350" } ], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary" } ] } }
vendor	Mozilla receipt Source NVD Its words `Mozilla` Read by `field:cve.affected[].affectedData[].vendor` Said since 2026-10-02 12:00 UTC Last answered 2026-10-05 12:24 UTC Original open at the source What the source handed over { "cve": { "affected": [ { "affectedData": [ { "product": "Firefox", "vendor": "Mozilla", "versions": [ { "lessThanOrEqual": "140.", "status": "unaffected", "version": "140.1", "versionType": "rpm" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "141", "versionType": "rpm" } ] }, { "product": "Thunderbird", "vendor": "Mozilla", "versions": [ { "lessThanOrEqual": "140.", "status": "unaffected", "version": "140.1", "versionType": "rpm" }, { "lessThanOrEqual": "", "status": "unaffected", "version": "141", "versionType": "rpm" } ] } ], "source": "security@mozilla.org" } ], "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:a:mozilla:firefox:::::esr:::", "matchCriteriaId": "B4D5C090-29D0-4488-843B-6CAAA287CF91", "versionEndExcluding": "140.1.0", "vulnerable": true }, { "criteria": "cpe:2.3:a:mozilla:firefox:::::-:::", "matchCriteriaId": "8684A46E-D70A-4830-8971-A6DCC360F422", "versionEndExcluding": "141.0", "vulnerable": true }, { "criteria": "cpe:2.3:a:mozilla:thunderbird:::::esr:::", "matchCriteriaId": "F6B4AF14-07DC-4941-9531-9CFC6CE00567", "versionEndExcluding": "140.1.0", "vulnerable": true }, { "criteria": "cpe:2.3:a:mozilla:thunderbird:::::-:::", "matchCriteriaId": "95D506DD-BD9B-4D90-802F-5BE673F1CF14", "versionEndExcluding": "141.0", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "cveTags": [], "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 almacenó en caché las respuestas de preflight de CORS tras los cambios de dirección IP. Esto permitió eludir CORS mediante revinculación de DNS. Esta vulnerabilidad afecta a Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141 y Thunderbird < 140.1." } ], "id": "CVE-2025-8036", "lastModified": "2026-09-30T18:10:00.190", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1" }, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary" } ], "ssvcV203": [ { "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": { "id": "CVE-2025-8036", "options": [ { "exploitation": "none" }, { "automatable": "no" }, { "technicalImpact": "total" } ], "role": "CISA Coordinator", "timestamp": "2025-07-23T14:26:17.781838Z", "version": "2.0.3" } } ] }, "published": "2025-07-22T21:15:50.760", "references": [ { "source": "security@mozilla.org", "tags": [ "Permissions Required" ], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1960834" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-56/" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-59/" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-61/" }, { "source": "security@mozilla.org", "tags": [ "Vendor Advisory" ], "url": "https://www.mozilla.org/security/advisories/mfsa2025-63/" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.kb.cert.org/vuls/id/652514" } ], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-350" } ], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary" } ] } }

Text

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. Thunderbird almacenó en caché las respuestas de preflight de CORS tras los cambios de dirección IP. Esto permitió eludir CORS mediante revinculación de DNS. Esta vulnerabilidad afecta a Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141 y Thunderbird < 140.1.