{"id":"CVE-2026-82661","title":"Nodemailer before 8.0.9 fails to sanitize carriage return and line feed characters in list comment fields, allowing attackers to inject arbitrary message headers","summary":"Nodemailer before 8.0.9 fails to sanitize carriage return and line feed characters in list comment fields, allowing attackers to inject arbitrary message headers. An attacker with control over list.*.comment parameters can inject CRLF se…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-93"],"vendor":"nodemailer","product":"nodemailer","affected":["nodemailer < 8.0.9"],"published":"2026-08-31","updated":"2026-09-10","sourceUpdated":"2026-09-10T15:48:28.757","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-82661","references":[{"url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-268h-hp4c-crq3","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/nodemailer-crlf-injection-via-list-header-comments","label":"disclosure@vulncheck.com"},{"url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-268h-hp4c-crq3","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-82661.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-82661"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2526186"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-82661"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82661"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-02T17:58:24.889861Z"},"ingestedAt":"2026-09-13T09:27:39.898Z","epss":0.00261,"epssPercentile":0.15845,"slug":"CVE-2026-82661","body":"## Overview\n\nNodemailer before 8.0.9 fails to sanitize carriage return and line feed characters in list comment fields, allowing attackers to inject arbitrary message headers. An attacker with control over list.*.comment parameters can inject CRLF sequences to create additional headers in generated RFC822 messages, altering mail client behavior and message semantics.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Developer Hub, Self-service automation portal 2 · no fix planned: Red Hat Developer Hub, Self-service automation portal 2 · updated 2026-09-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-82661.json)","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":29.7,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}