CVE-2026-114725 - Roundcube Webmail Mail Header Injection Vulnerability
CVE ID :CVE-2026-114725
Published : Oct. 22, 2026, 1:52 a.m. | 29 minutes ago
Description :Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability. rcmail_sendmail stripped newline characters only from the Subject and Organization headers, leaving other header values taken from request parameters unsanitized, so a remote authenticated attacker could inject arbitrary headers into an outgoing message via the References, In-Reply-To, Message-ID and From parameters. Upstream fixed this in the commit “Fix mail header injection via References/In-Reply-To/Message-ID/From parameters”, which normalizes whitespace in every string header value.
Severity: 5.0 | MEDIUM
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Published : Oct. 22, 2026, 1:52 a.m. | 29 minutes ago
Description :Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability. rcmail_sendmail stripped newline characters only from the Subject and Organization headers, leaving other header values taken from request parameters unsanitized, so a remote authenticated attacker could inject arbitrary headers into an outgoing message via the References, In-Reply-To, Message-ID and From parameters. Upstream fixed this in the commit “Fix mail header injection via References/In-Reply-To/Message-ID/From parameters”, which normalizes whitespace in every string header value.
Severity: 5.0 | MEDIUM
Visit the link for more details, such as CVSS details, affected products, timeline, and more...