Fluid Attacks Database

Description

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, several Net::IMAP commands accept a raw string argument that is sent to the server without validation or escaping. If this string is derived from user-controlled input, it may contain contain CRLF sequences, which an attacker can use to inject arbitrary IMAP commands. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Package	Affected version	Patched versions
rubygems	net-imap	>=0.6.0 <0.6.4 \|\| >=0.5.0 <0.5.14 \|\| >=0 <0.4.24	0.6.4, 0.5.14, 0.4.24
rpm rhel10	ruby	-	-
rpm rhel9	ruby	-	-
rpm rhel10	ruby4.0	-	-
rpm rhel8	ruby	-	-
debian 11	ruby2.7	=2.7.4-1 \|\| =2.7.4-1+deb11u1 \|\| =2.7.4-1+deb11u2 \|\| =2.7.4-1+deb11u3 \|\| =2.7.4-1+deb11u4 \|\| =2.7.4-1+deb11u5 \|\| =2.7.5-1	-
debian 12	ruby3.1	=3.1.2-7 \|\| =3.1.2-7+deb12u1 \|\| =3.1.2-7+hurd.1 \|\| =3.1.2-8 \|\| =3.1.2-8.1~exp1 \|\| =3.1.2-8.3 \|\| =3.1.2-8.4 \|\| =3.1.2-8.5	-
debian 13	ruby3.3	=3.3.8-2 \|\| =3.3.8-2.1 \|\| =3.3.8-2.2	-
debian 14	ruby3.3	=3.3.8-2 \|\| =3.3.8-2.1 \|\| =3.3.8-2.2	-

Aliases

1. CVE-2026-422572. NVD-2026-422573. OSV-2026-422574. OSV-DEBIAN-2026-422575. GHSA-hm49-wcqc-g2xg6. GCVE-2026-422577. SECURITY-TRACKER-CVE-2026-42257

References

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