Medium [CVE-2026-82853] SMTP Command Injection allows email spoofing and phishing attacks
This medium-severity Red Hat Linux advisory covers CVE-2026-82853 affecting Red Hat Developer Hub, Self-service automation portal 2.
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Summary
Nodemailer versions before 8.0.5 contain an SMTP command injection vulnerability in the transport name option used in EHLO/HELO commands. The name parameter is concatenated directly into SMTP commands without sanitizing carriage return and line feed characters, allowing attackers to inject arbitrary SMTP commands for email spoofing and phishing attacks.
A flaw was found in Nodemailer. This vulnerability allows a remote attacker to inject arbitrary Simple Mail Transfer Protocol (SMTP) commands due to improper sanitization of carriage return and line feed characters in the transport name option.
Red Hat severity: Moderate — CVSS 4.9 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N). Weakness: CWE-93.
Affected Red Hat products: Red Hat Developer Hub; Self-service automation portal 2. Red Hat lists Red Hat Enterprise Linux 10; Red Hat Hardened Images as not affected.
Red Hat does not currently list a fixing RHSA for this CVE.
- < 8.0.5
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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