{"cve":"CVE-2026-82661","nvd":{"published":"2026-08-31T09:17:03.940","modified":"2026-09-10T15:48:28.757","status":"Awaiting Analysis","description":"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 sequences to create additional headers in generated RFC822 messages, altering mail client behavior and message semantics.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","score":5.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","score":5.4},"cwes":["CWE-93"],"references":["https://github.com/nodemailer/nodemailer/security/advisories/GHSA-268h-hp4c-crq3","https://www.vulncheck.com/advisories/nodemailer-crlf-injection-via-list-header-comments","https://github.com/nodemailer/nodemailer/security/advisories/GHSA-268h-hp4c-crq3"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:50.842544443+00:00"},"epss":{"cve":"CVE-2026-82661","score":0.00261,"percentile":0.17887,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-268h-hp4c-crq3","url":"https://osv.dev/vulnerability/GHSA-268h-hp4c-crq3","summary":"Nodemailer: CRLF injection in Nodemailer List-* header comments allows arbitrary message header injection","modified":"2026-09-10T03:51:07.307465115Z","packages":[{"ecosystem":"npm","name":"nodemailer","purl":"pkg:npm/nodemailer","ranges":["<8.0.9"],"fixed":["8.0.9"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}