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CVE-2025-43857

Low priority
Needs evaluation

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...

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
jruby 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 Needs evaluation —
ruby3.0 Not in release Needs evaluation Not in release —
ruby3.2 Needs evaluation Not in release Not in release —
ruby3.3 Not in release Not in release Not in release —
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CVE-2025-27221

Medium priority

Some fixes available 7 of 14

In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an inadvertent leakage of authentication credentials because userinfo is retained even after changing the host.

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
jruby 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 Fixed
ruby2.7 Not in release Not in release Fixed —
ruby3.0 Not in release Fixed Not in release —
ruby3.2 Fixed Not in release Not in release —
ruby3.3 Not in release Not in release Not in release —
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CVE-2025-27220

Medium priority

Some fixes available 7 of 14

In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method.

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
jruby 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 Fixed
ruby2.7 Not in release Not in release Fixed —
ruby3.0 Not in release Fixed Not in release —
ruby3.2 Fixed Not in release Not in release —
ruby3.3 Not in release Not in release Not in release —
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CVE-2025-27219

Medium priority

Some fixes available 7 of 14

In the CGI gem before 0.4.2 for Ruby, the CGI::Cookie.parse method in the CGI library contains a potential Denial of Service (DoS) vulnerability. The method does not impose any limit on the length of the raw cookie value...

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
jruby 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 Fixed
ruby2.7 Not in release Not in release Fixed —
ruby3.0 Not in release Fixed Not in release —
ruby3.2 Fixed Not in release Not in release —
ruby3.3 Not in release Not in release Not in release —
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CVE-2025-25186

Low priority
Fixed

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...

6 affected packages

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

Package 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 Not affected
ruby2.7 Not in release Not in release Not affected —
ruby3.0 Not in release Not affected Not in release —
ruby3.2 Fixed Not in release Not in release —
ruby3.3 Not in release Not in release Not in release —
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CVE-2025-0306

Medium priority
Not affected

A vulnerability was found in Ruby. The Ruby interpreter is vulnerable to the Marvin Attack. This attack allows the attacker to decrypt previously encrypted messages or forge signatures by exchanging a large number of messages with...

6 affected packages

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

Package 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 Not affected
ruby2.7 Not in release Not in release Not affected —
ruby3.0 Not in release Not affected Not in release —
ruby3.2 Not affected Not in release Not in release —
ruby3.3 Not in release Not in release Not in release —
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CVE-2024-49761

Medium priority

Some fixes available 7 of 14

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;). This does not happen with Ruby...

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
jruby 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 Fixed
ruby2.7 Not in release Not in release Fixed —
ruby3.0 Not in release Fixed Not in release —
ruby3.2 Fixed Not in release Not in release —
ruby3.3 Not in release Not in release Not in release —
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CVE-2024-43398

Low priority

Some fixes available 5 of 7

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has many deep elements that have same local name attributes. If you need to parse untrusted XMLs with tree parser API...

6 affected packages

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

Package 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 Fixed —
ruby3.0 Not in release Fixed Not in release —
ruby3.2 Fixed Not in release Not in release —
ruby3.3 Not in release Not in release Not in release —
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CVE-2024-41946

Medium priority

Some fixes available 5 of 14

REXML is an XML toolkit for Ruby. The REXML gem 3.3.2 has a DoS vulnerability when it parses an XML that has many entity expansions with SAX2 or pull parser API. The REXML gem 3.3.3 or later include the patch to fix the vulnerability.

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
jruby 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 Vulnerable
ruby2.7 Not in release Not in release Fixed —
ruby3.0 Not in release Fixed Not in release —
ruby3.2 Fixed Not in release Not in release —
ruby3.3 Not in release Not in release Not in release —
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CVE-2024-41123

Medium priority

Some fixes available 4 of 13

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.2 has some DoS vulnerabilities when it parses an XML that has many specific characters such as whitespace character, `>]` and `]>`. The REXML gem 3.3.3 or later include...

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
jruby 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 Vulnerable
ruby2.7 Not in release Not in release Fixed —
ruby3.0 Not in release Fixed Not in release —
ruby3.2 Fixed Not in release Not in release —
ruby3.3 Not in release Not in release Not in release —
Show all 7 packages Show less packages
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