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Net::IMAP: Denial of Service via incomplete raw argument validation

🗓️ 09 Jun 2026 18:36:11Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 6 Views

NetIMAP raw argument validation flaw allows CRLF injection that can hang a command until the next command.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-42257
9 May 202619:39
attackerkb
Tenable Nessus
Amazon Linux 2023 : ruby3.4, ruby3.4-bundled-gems, ruby3.4-default-gems (ALAS2023-2026-1807)
8 Jun 202600:00
nessus
Tenable Nessus
Ruby net-imap < 0.4.24 / 0.5.x < 0.5.14 / 0.6.x < 0.6.4 Multiple Vulnerabilities
8 May 202600:00
nessus
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-42257
12 May 202600:00
nessus
Amazon
Important: ruby3.4
8 Jun 202600:00
amazon
Chainguard
CVE-2026-42257 vulnerabilities
6 May 202601:17
cgr
Circl
CVE-2026-42257
9 May 202621:40
circl
CNNVD
Net::IMAP 命令注入漏洞
9 May 202600:00
cnnvd
CVE
CVE-2026-42257
9 May 202619:39
cve
CVE
CVE-2026-47241
9 Jun 202618:36
cve
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Vulners
Node
net-imapRange0.5.14rubygems
OR
net-imapRange0.6.00.6.4rubygems

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09 Jun 2026 18:36Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.19.8
CVSS 45.8
EPSS0.00016
SSVC
6