CVE-2026-114726

Name	CVE-2026-114726
Description	Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability in the Bounce (resend) action. rcube_mime::decode_address_list() did not strip control characters from the decoded display name, so a received message whose From display-name carries CRLF sequences in an encoded word could inject arbitrary headers into the message emitted when the user bounces it. Upstream fixed this in the commit “Fix mail header injection via the From display-name in the Bounce (resend) action”.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1151279

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
roundcube (PTS)	bookworm	1.6.5+dfsg-1+deb12u9	vulnerable
	bookworm (security)	1.6.5+dfsg-1+deb12u12	vulnerable
	trixie	1.6.18+dfsg-0+deb13u1	vulnerable
	trixie (security)	1.6.19+dfsg-0+deb13u1	vulnerable
	forky, sid	1.6.20+dfsg-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
roundcube	source	(unstable)	1.6.20+dfsg-1			1151279

Notes

https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5
Fixed by: https://github.com/roundcube/roundcubemail/commit/3a136465c965776a5f636587187626985dae4f3b (1.6.20)