sporkmonger Addressable up to 2.9.0 URI Template Processing Template#match resource consumption

Summaryinfo

A vulnerability classified as problematic was found in sporkmonger Addressable up to 2.9.0. Impacted is the function Template#match of the component URI Template Processing. Such manipulation leads to resource consumption. This vulnerability is uniquely identified as CVE-2026-126353. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in sporkmonger Addressable up to 2.9.0. It has been rated as problematic. Affected by this issue is the function Template#match of the component URI Template Processing. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource. Impacted is availability. CVE summarizes:

Addressable is an alternative implementation to the URI implementation that is part of Ruby's standard library. From 2.3.0 until 2.9.1, URI template expressions containing several exploded variables generate ambiguous regular expressions that can divide a run of members among the variables in polynomially many ways. Template#match or Template#extract processing of an attacker-controlled URI can therefore consume a thread and cause denial of service. The flaw affects MRI Ruby before 3.2 and JRuby, TruffleRuby 40.0, and plus or number-sign expressions on MRI Ruby 3.2. MRI Ruby 3.3 and later, URI parsing, and Template#expand are unaffected. This issue is fixed in version 2.9.1.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-126353 since 11/10/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 2.9.1 eliminates this vulnerability.

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Productinfo

Vendor

• sporkmonger

Name

• Addressable

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9.0

Website

• Product: https://github.com/sporkmonger/addressable/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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