Fluid Attacks Database

Description

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4, a man-in-the-middle attacker can cause Net::IMAP#starttls to return "successfully", without starting TLS. This issue has been patched in versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Component	Affected version	Patched versions
rpm rhel8	ruby	<0:2.5.9-115.module+el8.10.0+24408+7ffaaa88	0:2.5.9-115.module+el8.10.0+24408+7ffaaa88
rpm rhel9	ruby	<0:3.0.7-167.el9_8	0:3.0.7-167.el9_8
rpm rhel6	ruby	-	-
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	-
rubygems	net-imap	>=0.6.0 <0.6.4 \|\| >=0.5.0 <0.5.14 \|\| >=0.4.0 <0.4.24 \|\| >=0 <0.3.10	0.6.4, 0.5.14, 0.4.24, 0.3.10
debian 14	ruby3.3	=3.3.8-2 \|\| =3.3.8-2.1 \|\| =3.3.8-2.2	-
debian 13	ruby3.3	=3.3.8-2 \|\| =3.3.8-2.1 \|\| =3.3.8-2.2	-
rpm rhel10	ruby4.0	<0:4.0.3-35.el10_2	0:4.0.3-35.el10_2
rpm rhel10.0	ruby	<0:3.3.10-11.el10_0.2	0:3.3.10-11.el10_0.2
rpm rhel10	ruby	<0:3.3.10-13.el10_2	0:3.3.10-13.el10_2

1-10 of 14

Aliases

1. CVE-2026-422462. NVD-2026-422463. OSV-2026-422464. OSV-DEBIAN-2026-422465. GHSA-vcgp-9326-pqcp6. GCVE-2026-422467. SECURITY-TRACKER-CVE-2026-42246

References

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