CVE-2026-47242— Net::IMAP: Command Injection via ID command argument
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I. Basic Information for CVE-2026-47242
Vulnerability Information
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Vulnerability Title
Net::IMAP: Command Injection via ID command argument
Source: NVD (National Vulnerability Database)
Vulnerability Description
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, when Net::IMAP#id is called with a hash argument, although the ID field value strings are correctly quoted (escaping quoted specials), they were not validated to prohibit CRLF sequences. While Net::IMAP#enable does process its arguments for aliases, it does not validate them as valid atoms (or as a list of valid atoms). The #to_s value is sent verbatim. Arguments to either command could be used by an attacker to inject arbitrary IMAP commands. This vulnerability is fixed in 0.6.5 and 0.5.15.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-47242
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Other References for CVE-2026-47242 (1)
Same Patch Batch · ruby · 2026-06-22 · 3 CVEs total
| CVE-2026-47241 | Net::IMAP: Denial of Service via incomplete raw argument validation | |
| CVE-2026-47240 | Net::IMAP: Command Injection via non-synchronizing literal in "raw" argument |
IV. Related Vulnerabilities
Same product: net-imap
- CVE-2026-47240
Net::IMAP: Command Injection via non-synchronizing literal i - CVE-2026-47241
Net::IMAP: Denial of Service via incomplete raw argument val - CVE-2026-42258
net-imap: Command Injection via unvalidated Symbol inputs - CVE-2026-42257
net-imap: Command Injection via "raw" arguments to multiple - CVE-2026-42256
net-imap: Denial of service via high iteration count for `SC
Same vendor: ruby
- CVE-2026-47240
Net::IMAP: Command Injection via non-synchronizing literal i - CVE-2026-47241
Net::IMAP: Denial of Service via incomplete raw argument val - CVE-2026-42258
net-imap: Command Injection via unvalidated Symbol inputs - CVE-2026-42257
net-imap: Command Injection via "raw" arguments to multiple - CVE-2026-42256
net-imap: Denial of service via high iteration count for `SC
Same weakness: CWE-77
- CVE-2026-54090
File Browser: Command Allowlist Bypass via Shell Metacharact - CVE-2026-57453
Vim: PowerShell Command Injection via Unescaped Filename in - CVE-2026-52806
Gogs: RCE via git rebase --exec argument injection in pull r - CVE-2026-47240
Net::IMAP: Command Injection via non-synchronizing literal i - CVE-2026-12810
Edimax BR-6478AC V2 POST Request mp command injection
V. Comments for CVE-2026-47242
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