{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-126353 in the wild and no public exploit code.","exposure":"An affected version is only exploitable if your software calls Template#match or Template#extract. Many projects that include it are not exposed.","fix":"No fix has been published for CVE-2026-126353 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-126353 is a medium-severity denial of service vulnerability in sporkmonger addressable, published on 12 Nov 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-126353 and fix it if it is affected.\n\nWhat it is: CVE-2026-126353 is a medium-severity denial of service vulnerability in sporkmonger addressable, published on 12 Nov 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-126353 in the wild and no public exploit code.\nExposure: An affected version is only exploitable if your software calls Template#match or Template#extract. Many projects that include it are not exposed.\n\nAffected product: sporkmonger addressable. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n   If an affected version is present, also search the code for calls to Template#match or Template#extract and report whether any exist.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-126353/ (Markdown: https://insights.sbomify.com/CVE-2026-126353/index.md)","id":"CVE-2026-126353","markdown":"https://insights.sbomify.com/CVE-2026-126353/index.md","name":"CVE-2026-126353","record":{"aliases":["GHSA-4w5q-wg7v-w6gp"],"analysis":{"component_type":"library","exploitable_when_present":false,"fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Ruby URI library","requires_auth":"none","requires_specific_call":true,"summary":"Attacker-controlled URIs with many exploded variables can trigger regex backtracking in Addressable templates, exhausting threads in Ruby apps using it.","user_interaction":"not_required","vuln_class":"denial_of_service","vulnerable_functions":["Template#match","Template#extract"]},"analysis_generated_by":"sbomify/insights-2b-fp8","assigner":"GitHub_M","cpe":[],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity"}],"description":"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Addressable: Regular Expression Denial of Service in Addressable templates with several exploded variables","id":"CVE-2026-126353","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Addressable URI normalization resolves some dotted path segments to the wrong path","id":"CVE-2026-126354"},"nickname":null,"packages":[],"prev":{"headline":"Addressable: Regular Expression Denial of Service in Addressable templates with multiple variables","id":"CVE-2026-126352"},"products":["addressable"],"published":"2026-11-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-11-12","vendors":["sporkmonger"]},"summary":"Attacker-controlled URIs with many exploded variables can trigger regex backtracking in Addressable templates, exhausting threads in Ruby apps using it.","url":"https://insights.sbomify.com/CVE-2026-126353/"}