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10 vulnerabilities found for ActiveSupport by Rails

CVE-2026-33176 (GCVE-0-2026-33176)

Vulnerability from nvd – Published: 2026-03-23 23:29 – Updated: 2026-03-24 18:42
VLAI?
Title
Rails Active Support has a possible DoS vulnerability in its number helpers
Summary
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.
Severity ?
6.6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version
rails activesupport Affected: >= 8.1.0.beta1, < 8.1.2.1
Affected: >= 8.0.0.beta1, < 8.0.4.1
Affected: < 7.2.3.1
Create a notification for this product.
Show details on NVD website
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CVE-2026-33170 (GCVE-0-2026-33170)

Vulnerability from nvd – Published: 2026-03-23 23:09 – Updated: 2026-03-25 19:20
VLAI?
Title
Rails Active Support has a possible XSS vulnerability in SafeBuffer#%
Summary
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.
Severity ?
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
rails activesupport Affected: >= 8.1.0.beta1, < 8.1.2.1
Affected: >= 8.0.0.beta1, < 8.0.4.1
Affected: < 7.2.3.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-33169 (GCVE-0-2026-33169)

Vulnerability from nvd – Published: 2026-03-23 23:07 – Updated: 2026-03-24 15:46
VLAI?
Title
Rails Active Support has a possible ReDoS vulnerability in number_to_delimited
Summary
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.
Severity ?
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
rails activesupport Affected: >= 8.1.0.beta1, < 8.1.2.1
Affected: >= 8.0.0.beta1, < 8.0.4.1
Affected: < 7.2.3.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2023-38037 (GCVE-0-2023-38037)

Vulnerability from nvd – Published: 2025-01-09 00:33 – Updated: 2025-02-15 00:10
VLAI?
Summary
ActiveSupport::EncryptedFile writes contents that will be encrypted to a temporary file. The temporary file's permissions are defaulted to the user's current `umask` settings, meaning that it's possible for other users on the same system to read the contents of the temporary file. Attackers that have access to the file system could possibly read the contents of this temporary file while a user is editing it. All users running an affected release should either upgrade or use one of the workarounds immediately.
Severity ?
5.5 (Medium)
CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:L
CWE
  • CWE-732 - Incorrect Permission Assignment for Critical Resource
Assigner
References
Impacted products
Vendor Product Version
Rails ActiveSupport Affected: >= 5.2.0 , < >= 5.2.0 (custom)
Unaffected: 5.2.0 , < 5.2.0 (semver)
Unaffected: 7.0.7.1, 6.1.7.5 , < 7.0.7.1, 6.1.7.5 (custom)
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CVE-2023-28120 (GCVE-0-2023-28120)

Vulnerability from nvd – Published: 2025-01-09 00:33 – Updated: 2025-01-09 21:46
VLAI?
Summary
There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input.
Severity ?
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
Rails ActiveSupport Affected: 7.0.4.3 , < 7.0.4.3 (custom)
Affected: 6.1.7.3 , < 6.1.7.3 (custom)
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CVE-2026-33176 (GCVE-0-2026-33176)

Vulnerability from cvelistv5 – Published: 2026-03-23 23:29 – Updated: 2026-03-24 18:42
VLAI?
Title
Rails Active Support has a possible DoS vulnerability in its number helpers
Summary
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.
Severity ?
6.6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version
rails activesupport Affected: >= 8.1.0.beta1, < 8.1.2.1
Affected: >= 8.0.0.beta1, < 8.0.4.1
Affected: < 7.2.3.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-33170 (GCVE-0-2026-33170)

Vulnerability from cvelistv5 – Published: 2026-03-23 23:09 – Updated: 2026-03-25 19:20
VLAI?
Title
Rails Active Support has a possible XSS vulnerability in SafeBuffer#%
Summary
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.
Severity ?
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
rails activesupport Affected: >= 8.1.0.beta1, < 8.1.2.1
Affected: >= 8.0.0.beta1, < 8.0.4.1
Affected: < 7.2.3.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-33169 (GCVE-0-2026-33169)

Vulnerability from cvelistv5 – Published: 2026-03-23 23:07 – Updated: 2026-03-24 15:46
VLAI?
Title
Rails Active Support has a possible ReDoS vulnerability in number_to_delimited
Summary
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.
Severity ?
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
rails activesupport Affected: >= 8.1.0.beta1, < 8.1.2.1
Affected: >= 8.0.0.beta1, < 8.0.4.1
Affected: < 7.2.3.1
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CVE-2023-38037 (GCVE-0-2023-38037)

Vulnerability from cvelistv5 – Published: 2025-01-09 00:33 – Updated: 2025-02-15 00:10
VLAI?
Summary
ActiveSupport::EncryptedFile writes contents that will be encrypted to a temporary file. The temporary file's permissions are defaulted to the user's current `umask` settings, meaning that it's possible for other users on the same system to read the contents of the temporary file. Attackers that have access to the file system could possibly read the contents of this temporary file while a user is editing it. All users running an affected release should either upgrade or use one of the workarounds immediately.
Severity ?
5.5 (Medium)
CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:L
CWE
  • CWE-732 - Incorrect Permission Assignment for Critical Resource
Assigner
References
Impacted products
Vendor Product Version
Rails ActiveSupport Affected: >= 5.2.0 , < >= 5.2.0 (custom)
Unaffected: 5.2.0 , < 5.2.0 (semver)
Unaffected: 7.0.7.1, 6.1.7.5 , < 7.0.7.1, 6.1.7.5 (custom)
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Show details on NVD website
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CVE-2023-28120 (GCVE-0-2023-28120)

Vulnerability from cvelistv5 – Published: 2025-01-09 00:33 – Updated: 2025-01-09 21:46
VLAI?
Summary
There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input.
Severity ?
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
Rails ActiveSupport Affected: 7.0.4.3 , < 7.0.4.3 (custom)
Affected: 6.1.7.3 , < 6.1.7.3 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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