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CVE-2025-27221

Medium priority

Needs evaluation

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	16.04 LTS
jruby	Needs evaluation	Not in release	Needs evaluation	Needs evaluation	Needs evaluation
ruby2.3	Not in release	Not in release	Not in release	—	Needs evaluation
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	—	—

CVE-2025-27220

Medium priority

Needs evaluation

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	16.04 LTS
jruby	Needs evaluation	Not in release	Needs evaluation	Needs evaluation	Needs evaluation
ruby2.3	Not in release	Not in release	Not in release	—	Needs evaluation
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	—	—

CVE-2025-27219

Medium priority

Needs evaluation

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	16.04 LTS
jruby	Needs evaluation	Not in release	Needs evaluation	Needs evaluation	Needs evaluation
ruby2.3	Not in release	Not in release	Not in release	—	Needs evaluation
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	—	—

CVE-2025-25186

Low priority

Vulnerable

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	16.04 LTS
ruby2.3	Not in release	Not in release	Not in release	—	Not affected
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	Vulnerable	Not in release	Not in release	—	—
ruby3.3	Not in release	Not in release	Not in release	—	—

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	16.04 LTS
ruby2.3	Not in release	Not in release	Not in release	—	Not affected
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	—	—

CVE-2024-49761

Medium priority

Some fixes available 4 of 12

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	16.04 LTS
jruby	Needs evaluation	Not in release	Needs evaluation	Needs evaluation	Needs evaluation
ruby2.3	Not in release	Not in release	Not in release	—	Vulnerable
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	—	—

CVE-2024-43398

Low priority

Some fixes available 1 of 6

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	16.04 LTS
ruby2.3	Not in release	Not in release	Not in release	—	Needs evaluation
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	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	—	—

CVE-2024-41946

Medium priority

Some fixes available 4 of 12

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	16.04 LTS
jruby	Needs evaluation	Not in release	Needs evaluation	Needs evaluation	Needs evaluation
ruby2.3	Not in release	Not in release	Not in release	—	Vulnerable
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	—	—

CVE-2024-41123

Medium priority

Some fixes available 1 of 12

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	16.04 LTS
jruby	Needs evaluation	Not in release	Needs evaluation	Needs evaluation	Needs evaluation
ruby2.3	Not in release	Not in release	Not in release	—	Vulnerable
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	Vulnerable	Not in release	—	—
ruby3.2	Vulnerable	Not in release	Not in release	—	—
ruby3.3	Not in release	Not in release	Not in release	—	—

CVE-2024-39908

Medium priority

Some fixes available 1 of 12

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.1 has some DoS vulnerabilities when it parses an XML that has many specific characters such as `<`, `0` and `%>`. If you need to parse untrusted XMLs, you many be impacted...

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	16.04 LTS
jruby	Needs evaluation	Not in release	Needs evaluation	Needs evaluation	Needs evaluation
ruby2.3	Not in release	Not in release	Not in release	—	Vulnerable
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	Vulnerable	Not in release	—	—
ruby3.2	Vulnerable	Not in release	Not in release	—	—
ruby3.3	Not in release	Not in release	Not in release	—	—

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