{"id":"CVE-2025-59937","state":"PUBLISHED","title":"go-mail has insufficient address encoding when passing mail addresses to the SMTP client","description":"go-mail is a comprehensive library for sending mails with Go. In versions 0.7.0 and below, due to incorrect handling of the mail.Address values when a sender- or recipient address is passed to the corresponding MAIL FROM or RCPT TO commands of the SMTP client, there is a possibility of wrong address routing or even ESMTP parameter smuggling. For successful exploitation, it is required that the user's code allows for arbitrary mail address input (i. e. through a web form or similar). If only static mail addresses are used (i. e. in a config file) and the mail addresses in use do not consist of quoted local parts, this should not affect users. This issue is fixed in version 0.7.1","publishedAt":"2025-09-29T22:21:02.484Z","updatedAt":"2025-09-30T14:44:35.194Z","severity":{"score":8.2,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["wneessen go-mail"],"affected":[{"vendor":"wneessen","product":"go-mail","versions":[{"version":"< 0.7.1","status":"affected"}]}],"references":["https://github.com/wneessen/go-mail/security/advisories/GHSA-wpwj-69cm-q9c5","https://github.com/wneessen/go-mail/issues/495","https://github.com/wneessen/go-mail/pull/496","https://github.com/wneessen/go-mail/commit/42e92cfe027be04aff72921adb0f72f11d517479"],"weaknesses":["CWE-88"],"ingestedAt":"2026-10-29T20:09:39.787Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/59xxx/CVE-2025-59937.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-59937","state":"PUBLISHED","datePublished":"2025-09-29T22:21:02.484Z","dateUpdated":"2025-09-30T14:44:35.194Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-09-23T14:33:49.505Z"},"containers":{"cna":{"title":"go-mail has insufficient address encoding when passing mail addresses to the SMTP client","descriptions":[{"lang":"en","value":"go-mail is a comprehensive library for sending mails with Go. In versions 0.7.0 and below, due to incorrect handling of the mail.Address values when a sender- or recipient address is passed to the corresponding MAIL FROM or RCPT TO commands of the SMTP client, there is a possibility of wrong address routing or even ESMTP parameter smuggling. For successful exploitation, it is required that the user's code allows for arbitrary mail address input (i. e. through a web form or similar). If only static mail addresses are used (i. e. in a config file) and the mail addresses in use do not consist of quoted local parts, this should not affect users. This issue is fixed in version 0.7.1"}],"affected":[{"vendor":"wneessen","product":"go-mail","versions":[{"version":"< 0.7.1","status":"affected"}]}],"references":[{"url":"https://github.com/wneessen/go-mail/security/advisories/GHSA-wpwj-69cm-q9c5","name":"https://github.com/wneessen/go-mail/security/advisories/GHSA-wpwj-69cm-q9c5","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/wneessen/go-mail/issues/495","name":"https://github.com/wneessen/go-mail/issues/495","tags":["x_refsource_MISC"]},{"url":"https://github.com/wneessen/go-mail/pull/496","name":"https://github.com/wneessen/go-mail/pull/496","tags":["x_refsource_MISC"]},{"url":"https://github.com/wneessen/go-mail/commit/42e92cfe027be04aff72921adb0f72f11d517479","name":"https://github.com/wneessen/go-mail/commit/42e92cfe027be04aff72921adb0f72f11d517479","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-88","lang":"en","description":"CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-09-29T22:21:02.484Z"},"source":{"advisory":"GHSA-wpwj-69cm-q9c5","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/wneessen/go-mail/issues/495","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-09-30T14:43:56.630417Z","id":"CVE-2025-59937","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-09-30T14:44:35.194Z"}}]}}}