activesupport-7.2.3.gem: 3 vulnerabilities (highest severity is: 7.5)

[appcues-wss]

Vulnerable Library - activesupport-7.2.3.gem

A toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Rich support for multibyte strings, internationalization, time zones, and testing.

Library home page: https://rubygems.org/gems/activesupport-7.2.3.gem

Path to dependency file: /example/Gemfile.lock

Path to vulnerable library: /example/Gemfile.lock

Vulnerabilities

CVE	Severity	CVSS	Dependency	Type	Fixed in (activesupport version)	Remediation Possible**
CVE-2026-33176	High	7.5	activesupport-7.2.3.gem	Direct	https://github.com/rails/rails.git - v8.1.3,https://github.com/rails/rails.git - v8.0.4.1,https://github.com/rails/rails.git - v7.2.3.1,https://github.com/rails/rails.git - v8.0.5,https://github.com/rails/rails.git - v8.1.2.1	✅
CVE-2026-33169	Medium	5.3	activesupport-7.2.3.gem	Direct	https://github.com/rails/rails.git - v8.0.4.1,https://github.com/rails/rails.git - v8.1.2.1,https://github.com/rails/rails.git - v7.2.3.1	✅
CVE-2026-33170	Medium	4.3	activesupport-7.2.3.gem	Direct	https://github.com/rails/rails.git - v7.2.3.1,https://github.com/rails/rails.git - v8.0.4.1,https://github.com/rails/rails.git - v8.1.2.1,https://github.com/rails/rails.git - v8.1.3,https://github.com/rails/rails.git - v8.0.5	✅

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2026-33176

Vulnerable Library - activesupport-7.2.3.gem

A toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Rich support for multibyte strings, internationalization, time zones, and testing.

Library home page: https://rubygems.org/gems/activesupport-7.2.3.gem

Path to dependency file: /example/Gemfile.lock

Path to vulnerable library: /example/Gemfile.lock

Dependency Hierarchy:

• ❌ activesupport-7.2.3.gem (Vulnerable Library)

Found in base branch: main

Vulnerability Details

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Support number helpers accept strings containing scientific notation (e.g. "1e10000"), which "BigDecimal" expands into extremely large decimal representations. This can cause excessive memory allocation and CPU consumption when the expanded number is formatted, possibly resulting in a DoS vulnerability. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

Publish Date: 2026-03-23

URL: CVE-2026-33176

CVSS 3 Score Details (7.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: rails/rails@19dbab5

Release Date: 2026-03-23

Fix Resolution: https://github.com/rails/rails.git - v8.1.3,https://github.com/rails/rails.git - v8.0.4.1,https://github.com/rails/rails.git - v7.2.3.1,https://github.com/rails/rails.git - v8.0.5,https://github.com/rails/rails.git - v8.1.2.1

⛑️ Automatic Remediation will be attempted for this issue.

CVE-2026-33169

Vulnerable Library - activesupport-7.2.3.gem

A toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Rich support for multibyte strings, internationalization, time zones, and testing.

Library home page: https://rubygems.org/gems/activesupport-7.2.3.gem

Path to dependency file: /example/Gemfile.lock

Path to vulnerable library: /example/Gemfile.lock

Dependency Hierarchy:

• ❌ activesupport-7.2.3.gem (Vulnerable Library)

Found in base branch: main

Vulnerability Details

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. "NumberToDelimitedConverter" uses a lookahead-based regular expression with "gsub!" to insert thousands delimiters. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, the interaction between the repeated lookahead group and "gsub!" can produce quadratic time complexity on long digit strings. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

Publish Date: 2026-03-23

URL: CVE-2026-33169

CVSS 3 Score Details (5.3)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: Low

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: rails/rails@b54a4b3

Release Date: 2026-03-23

Fix Resolution: https://github.com/rails/rails.git - v8.0.4.1,https://github.com/rails/rails.git - v8.1.2.1,https://github.com/rails/rails.git - v7.2.3.1

⛑️ Automatic Remediation will be attempted for this issue.

CVE-2026-33170

Vulnerable Library - activesupport-7.2.3.gem

A toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Rich support for multibyte strings, internationalization, time zones, and testing.

Library home page: https://rubygems.org/gems/activesupport-7.2.3.gem

Path to dependency file: /example/Gemfile.lock

Path to vulnerable library: /example/Gemfile.lock

Dependency Hierarchy:

• ❌ activesupport-7.2.3.gem (Vulnerable Library)

Found in base branch: main

Vulnerability Details

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, "SafeBuffer#%" does not propagate the "@html_unsafe" flag to the newly created buffer. If a "SafeBuffer" is mutated in place (e.g. via "gsub!") and then formatted with "%" using untrusted arguments, the result incorrectly reports "html_safe? == true", bypassing ERB auto-escaping and possibly leading to XSS. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

Publish Date: 2026-03-23

URL: CVE-2026-33170

CVSS 3 Score Details (4.3)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: Low
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: rails/rails@6e8a811

Release Date: 2026-03-23

Fix Resolution: https://github.com/rails/rails.git - v7.2.3.1,https://github.com/rails/rails.git - v8.0.4.1,https://github.com/rails/rails.git - v8.1.2.1,https://github.com/rails/rails.git - v8.1.3,https://github.com/rails/rails.git - v8.0.5

⛑️ Automatic Remediation will be attempted for this issue.

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⛑️Automatic Remediation will be attempted for this issue.