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...
Product
ruby net-imap vulnerabilities
10 published CVES affecting ruby net-imap, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 10
- Critical
- 0
- High
- 1
- Medium
- 7
- Low
- 2
- Unscored
- 0
- CISA KEV
- 0
Latest ruby net-imap CVEs
Newest publication first
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MediumCVSS 5.8 EPSS 0.18% PoC
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CVE-2026-47240 Net::IMAP: Command Injection via non-synchronizing literal in "raw" argument
PublishedMediumCVSS 5.8 EPSS 0.83% PoCNet::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a "raw data" argument that is sent verbatim after validation to prevent command injection. However, if a server does not support...
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LowCVSS 2.1 EPSS 0.38% PoC
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a raw string argument which is only validated to prevent CRLF injection and then sent verbatim. If this string is derived from u...
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MediumCVSS 5.8 EPSS 0.78% PoC
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, symbol arguments to commands are vulnerable to a CRLF Injection / IMAP Command injection via Symbol arguments passed to IMAP commands. This issu...
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MediumCVSS 5.8 EPSS 0.43% PoC
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 fro...
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CVE-2026-42256 net-imap: Denial of service via high iteration count for `SCRAM-*` authentication
PublishedMediumCVSS 6.0 EPSS 0.30% PoCNet::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. From versions 0.4.0 to before 0.4.24, 0.5.0 to before 0.5.14, and 0.6.0 to before 0.6.4, when authenticating a connection with SCRAM-SHA1 or SCRAM-SHA256, a hostile server can perform a com...
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LowCVSS 2.3 EPSS 0.41% PoC
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, Net::IMAP::ResponseReader has quadratic time complexity when reading large responses containing many string literals. A hostile server can send...
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HighCVSS 7.6 EPSS 0.31% PoC
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...
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MediumCVSS 6.0 EPSS 0.49% PoC
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.5.7, 0.4.20, 0.3.9, and 0.2.5, there is a possibility for denial of service by memory exhaustion when net-imap reads server responses. At any time while the client is co...
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MediumCVSS 6.5 EPSS 0.63% PoC
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Starting in version 0.3.2 and prior to versions 0.3.8, 0.4.19, and 0.5.6, there is a possibility for denial of service by memory exhaustion in net-imap's response parser. At any time while...
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.