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CVE-2026-47242

Medium priority
Needs evaluation

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...

7 affected packages

ruby2.3, ruby2.5, ruby2.7, ruby3.0, ruby3.2...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
ruby2.3 Not in release Not in release Not in release
ruby2.5 Not in release Not in release Not in release Needs evaluation
ruby2.7 Not in release Not in release Not in release Needs evaluation
ruby3.0 Not in release Not in release Needs evaluation
ruby3.2 Not in release Needs evaluation Not in release
ruby3.3 Needs evaluation Not in release Not in release
jruby Needs evaluation Needs evaluation Not in release Needs evaluation Needs evaluation
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CVE-2026-47241

Medium priority
Needs evaluation

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...

7 affected packages

ruby2.3, ruby2.5, ruby2.7, ruby3.0, ruby3.2...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
ruby2.3 Not in release Not in release Not in release
ruby2.5 Not in release Not in release Not in release Needs evaluation
ruby2.7 Not in release Not in release Not in release Needs evaluation
ruby3.0 Not in release Not in release Needs evaluation
ruby3.2 Not in release Needs evaluation Not in release
ruby3.3 Needs evaluation Not in release Not in release
jruby Needs evaluation Needs evaluation Not in release Needs evaluation Needs evaluation
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CVE-2026-47240

Medium priority
Needs evaluation

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 data" argument that is sent verbatim after validation to prevent...

7 affected packages

ruby2.3, ruby2.5, ruby2.7, ruby3.0, ruby3.2...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
ruby2.3 Not in release Not in release Not in release
ruby2.5 Not in release Not in release Not in release Needs evaluation
ruby2.7 Not in release Not in release Not in release Needs evaluation
ruby3.0 Not in release Not in release Needs evaluation
ruby3.2 Not in release Needs evaluation Not in release
ruby3.3 Needs evaluation Not in release Not in release
jruby Needs evaluation Needs evaluation Not in release Needs evaluation Needs evaluation
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CVE-2026-46727

Medium priority
Needs evaluation

An issue was discovered in Ruby 4 before 4.0.5. A race condition leading to a use-after-free in the pthread-based getaddrinfo timeout handler (rb_getaddrinfo in ext/socket/raddrinfo.c) allows a remote attacker who can delay DNS...

7 affected packages

jruby, ruby2.3, ruby2.5, ruby2.7, ruby3.0...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
jruby Needs evaluation Needs evaluation Not in release Needs evaluation Needs evaluation
ruby2.3 Not in release Not in release Not in release
ruby2.5 Not in release Not in release Not in release Needs evaluation
ruby2.7 Not in release Not in release Not in release Needs evaluation
ruby3.0 Not in release Not in release Needs evaluation
ruby3.2 Not in release Needs evaluation Not in release
ruby3.3 Needs evaluation Not in release Not in release
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CVE-2026-42258

Medium priority
Needs evaluation

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...

7 affected packages

jruby, ruby2.3, ruby2.5, ruby2.7, ruby3.0...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
jruby Needs evaluation Needs evaluation Not in release Needs evaluation Needs evaluation
ruby2.3 Not in release Not in release Not in release
ruby2.5 Not in release Not in release Not in release Needs evaluation
ruby2.7 Not in release Not in release Not in release Needs evaluation
ruby3.0 Not in release Not in release Needs evaluation
ruby3.2 Not in release Needs evaluation Not in release
ruby3.3 Needs evaluation Not in release Not in release
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CVE-2026-42257

Medium priority

Some fixes available 6 of 12

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...

7 affected packages

ruby2.3, ruby2.5, ruby2.7, ruby3.0, ruby3.2...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
ruby2.3 Not in release Not in release Not in release
ruby2.5 Not in release Not in release Not in release Fixed
ruby2.7 Not in release Not in release Not in release Fixed
ruby3.0 Not in release Not in release Fixed
ruby3.2 Not in release Fixed Not in release
ruby3.3 Fixed Not in release Not in release
jruby Vulnerable Vulnerable Not in release Vulnerable Vulnerable
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CVE-2026-42256

Medium priority

Some fixes available 1 of 2

Net::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...

7 affected packages

ruby2.7, ruby3.0, ruby3.2, ruby3.3, jruby...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
ruby2.7 Not in release Not in release Not in release Not affected
ruby3.0 Not in release Not in release Not affected
ruby3.2 Not in release Not affected Not in release
ruby3.3 Fixed Not in release Not in release
jruby Not affected Not affected Not in release Not affected Not affected
ruby2.3 Not in release Not in release Not in release
ruby2.5 Not in release Not in release Not in release Not affected
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CVE-2026-42246

Medium priority

Some fixes available 6 of 12

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",...

7 affected packages

ruby2.3, ruby2.5, ruby2.7, ruby3.0, ruby3.2...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
ruby2.3 Not in release Not in release Not in release
ruby2.5 Not in release Not in release Not in release Fixed
ruby2.7 Not in release Not in release Not in release Fixed
ruby3.0 Not in release Not in release Fixed
ruby3.2 Not in release Fixed Not in release
ruby3.3 Fixed Not in release Not in release
jruby Vulnerable Vulnerable Not in release Vulnerable Vulnerable
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CVE-2026-42245

Medium priority
Ignored

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...

7 affected packages

ruby2.7, ruby3.0, ruby3.2, ruby3.3, jruby...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
ruby2.7 Not in release Not in release Not in release Not affected
ruby3.0 Not in release Not in release Not affected
ruby3.2 Not in release Not affected Not in release
ruby3.3 Not affected Not in release Not in release
jruby Not affected Not affected Not in release Not affected Not affected
ruby2.3 Not in release Not in release Not in release
ruby2.5 Not in release Not in release Not in release Not affected
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CVE-2026-41316

Medium priority
Needs evaluation

ERB is a templating system for Ruby. Ruby 2.7.0 (before ERB 2.2.0 was published on rubygems.org) introduced an `@_init` instance variable guard in `ERB#result` and `ERB#run` to prevent code execution when an ERB object is...

7 affected packages

jruby, ruby2.3, ruby2.5, ruby2.7, ruby3.0...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
jruby Needs evaluation Needs evaluation Not in release Needs evaluation Needs evaluation
ruby2.3 Not in release Not in release Not in release
ruby2.5 Not in release Not in release Not in release Needs evaluation
ruby2.7 Not in release Not in release Not in release Needs evaluation
ruby3.0 Not in release Not in release Needs evaluation
ruby3.2 Not in release Needs evaluation Not in release
ruby3.3 Needs evaluation Not in release Not in release
Show all 7 packages Show less packages