{"answers":{"affected":"4 open source packages ship an affected version, including axios. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42042 exists.","fix":"Upgrade axios to a fixed version for your release line: 0.31.1 or 1.15.1.","what":"CVE-2026-42042 is a medium-severity vulnerability in axios, published on 24 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-42042 and fix it if it is affected.\n\nWhat it is: CVE-2026-42042 is a medium-severity vulnerability in axios, published on 24 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42042 exists.\n\nAffected packages and fixed versions:\n- axios (npm): affected all versions; fixed in 0.31.1\n- axios (npm): affected all versions; fixed in 0.31.1\n- axios (npm): affected from 1.0.0; fixed in 1.15.1\n- axios (npm): affected from 1.0.0; fixed in 1.15.1\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.\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-2026-42042/ (Markdown: https://insights.sbomify.com/CVE-2026-42042/index.md)","id":"CVE-2026-42042","markdown":"https://insights.sbomify.com/CVE-2026-42042/index.md","name":"CVE-2026-42042","record":{"aliases":["CLEANSTART-2026-BR76038","CLEANSTART-2026-LN42574","DEBIAN-CVE-2026-42042","ECHO-f974-2d2f-b5cf","GHSA-xx6v-rp6x-q39c","MINI-29w3-69vm-c24f","MINI-5m5p-r9wp-pmh8","MINI-8fx2-gv38-9cp4","MINI-8rjp-v72h-mr99","MINI-977g-chxj-qmwg","MINI-98jr-mqph-526v","MINI-c62g-77j2-q386","MINI-cmv7-vpxj-gjx3","MINI-cv8v-q8mr-5h94","MINI-fg42-9pfc-fh55","MINI-gfjf-6q7w-rmxm","MINI-h367-f6wp-qjxx","MINI-hvh2-96rx-fhpr","MINI-jqc7-6c7p-2hx8","MINI-qmq9-4g83-wfq6","MINI-qprj-439g-mq9v","MINI-w4wx-fx8m-c5wv","MINI-w938-cp23-3hr5","MINI-xxfj-4586-wv9j","ROOT-APP-NPM-CVE-2026-42042","UBUNTU-CVE-2026-42042"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"JavaScript HTTP client","requires_auth":"none","summary":"Prototype pollution allows attackers to bypass same-origin checks, leaking XSRF tokens to cross-origin servers in Axios HTTP clients.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"axios","vendor":"axios"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-201","name":"Insertion of Sensitive Information Into Sent Data"},{"id":"CWE-183","name":"Permissive List of Allowed Inputs"}],"description":"Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, the Axios library's XSRF token protection logic uses JavaScript truthy/falsy semantics instead of strict boolean comparison for the withXSRFToken config property. When this property is set to any truthy non-boolean value (via prototype pollution or misconfiguration), the same-origin check (isURLSameOrigin) is short-circuited, causing XSRF tokens to be sent to all request targets including cross-origin servers controlled by an attacker. This vulnerability is fixed in 1.15.1 and 0.31.1.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Axios: XSRF Token Cross-Origin Leakage via Prototype Pollution Gadget in `withXSRFToken` Boolean Coercion","id":"CVE-2026-42042","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":4,"n_references":1,"next":{"headline":"Axios: Incomplete Fix for CVE-2025-62718 — NO_PROXY Protection Bypassed via RFC 1122 Loopback Subnet (127.0.0.0/8) in Axios 1.15.0","id":"CVE-2026-42043"},"packages":[{"ecosystem":"npm","fixed":["0.31.1"],"introduced":["0"],"last_affected":[],"package":"axios","purl":null,"source":"GHSA-xx6v-rp6x-q39c"},{"ecosystem":"npm","fixed":["0.31.1"],"introduced":["0"],"last_affected":[],"package":"axios","purl":"pkg:npm/axios","source":"GHSA-xx6v-rp6x-q39c"},{"ecosystem":"npm","fixed":["1.15.1"],"introduced":["1.0.0"],"last_affected":[],"package":"axios","purl":null,"source":"GHSA-xx6v-rp6x-q39c"},{"ecosystem":"npm","fixed":["1.15.1"],"introduced":["1.0.0"],"last_affected":[],"package":"axios","purl":"pkg:npm/axios","source":"GHSA-xx6v-rp6x-q39c"}],"prev":{"headline":"Axios: Authentication Bypass via Prototype Pollution Gadget in `validateStatus` Merge Strategy","id":"CVE-2026-42041"},"products":["axios"],"published":"2026-04-24","related":[{"cvss_score":8.7,"headline":"Axios: Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`","id":"CVE-2026-44494","kev_date_added":null,"published":"2026-06-11"},{"cvss_score":8.6,"headline":"axios's shouldBypassProxy does not recognize IPv4-mapped IPv6 addresses, allowing NO_PROXY bypass (incomplete fix for CVE-2025-62718)","id":"CVE-2026-44492","kev_date_added":null,"published":"2026-06-11"},{"cvss_score":8.3,"headline":"axios before 0.33.0 Prototype Pollution via Node HTTP adapter","id":"CVE-2026-67320","kev_date_added":null,"published":"2026-08-01"},{"cvss_score":8.2,"headline":"Axios: Proxy-Authorization Credential Leak to Origin Server Across HTTP-to-HTTPS Redirect in Axios Node.js HTTP Adapter","id":"CVE-2026-44487","kev_date_added":null,"published":"2026-06-11"},{"cvss_score":7.7,"headline":"Possible SSRF and Credential Leakage via Absolute URL in axios Requests","id":"CVE-2025-27152","kev_date_added":null,"published":"2025-03-07"},{"cvss_score":7.5,"headline":"Axios: Proxy-Authorization header leaks to redirect target when proxy is re-evaluated to direct connection","id":"CVE-2026-44486","kev_date_added":null,"published":"2026-06-11"},{"cvss_score":7.5,"headline":"Axios: Allocation of Resources Without Limits or Throttling in axios","id":"CVE-2026-44488","kev_date_added":null,"published":"2026-06-11"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-27","vendors":["axios"]},"summary":"Prototype pollution allows attackers to bypass same-origin checks, leaking XSRF tokens to cross-origin servers in Axios HTTP clients.","url":"https://insights.sbomify.com/CVE-2026-42042/"}