CVE-2026-33169

March 24, 2026, 6:01 p.m.

6.9
Medium

Description

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.

Product(s) Impacted

Vendor Product Versions
Rubyonrails
  • Rails
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-400
Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a rubyonrails rails / / / / / / / /
a rubyonrails rails / / / / / / / /
a rubyonrails rails / / / / / / / /

References

https://github.com/rails/rails/commit/29154f1097da13d48fdb3200760b3e3da66dcb11
https://github.com/rails/rails/commit/b54a4b373c6f042cab6ee2033246b1c9ecc38974
https://github.com/rails/rails/commit/ec1a0e215efd27a3b3911aae6df978a80f456a49
https://github.com/rails/rails/releases/tag/v7.2.3.1
https://github.com/rails/rails/releases/tag/v8.0.4.1
https://github.com/rails/rails/releases/tag/v8.1.2.1
https://github.com/rails/rails/security/advisories/GHSA-cg4j-q9v8-6v38

Tags

[email protected]
CWE-400
2026-03-24
CVE-2026-33169

CVSS Score

6.9 / 10

CVSS Data - 4.0

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Attack Requirements: NONE
  • Privileges Required: NONE
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: LOW
  • Exploit Maturity: NOT_DEFINED

    • 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

    View Vector String

Timeline

Published: March 24, 2026, 12:16 a.m.
Last Modified: March 24, 2026, 6:01 p.m.

Status : Analyzed

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.