{"answers":{"affected":"2 open source packages ship an affected version, including axios.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-101903 exists.","fix":"Upgrade axios to 1.20.0 or later.","what":"CVE-2026-101903 is a high-severity denial of service vulnerability in axios, published on 28 Sep 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-2026-101903 and fix it if it is affected.\n\nWhat it is: CVE-2026-101903 is a high-severity denial of service vulnerability in axios, published on 28 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-101903 exists.\n\nAffected packages and fixed versions:\n- axios (npm): affected from 1.16.1; fixed in 1.20.0\n- axios (npm): affected from 1.16.1; fixed in 1.20.0\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-2026-101903/ (Markdown: https://insights.sbomify.com/CVE-2026-101903/index.md)","id":"CVE-2026-101903","markdown":"https://insights.sbomify.com/CVE-2026-101903/index.md","name":"CVE-2026-101903","record":{"aliases":["CLEANSTART-2026-RI78049","CLEANSTART-2026-SF41732","CLEANSTART-2026-XJ53800","DEBIAN-CVE-2026-101903","ECHO-441d-f705-bc64","GHSA-c29m-xwm3-cm6r","MINI-3h4v-9p3f-phv9","MINI-6347-hw78-jhjq","MINI-6835-7crv-5335","MINI-6qqc-3m53-5xvp","MINI-7mpx-p58q-8fg7","MINI-8599-x9cg-q878","MINI-fm57-62m3-jc22","MINI-jhjw-jpqx-q67x","MINI-ppvp-v98x-9x3q","MINI-wg7v-mmhc-v4v6","ROOT-APP-NPM-CVE-2026-101903","UBUNTU-CVE-2026-101903"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript HTTP client","requires_auth":"none","summary":"An attacker can cause a denial of service by sending a malformed data URL that triggers excessive backtracking in the Axios library's parser.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity"}],"description":"Axios is a promise-based HTTP client for the browser and Node.js. From 1.16.1 until 1.20.0, the RFC 2397 regular expression allows slash characters on both sides of the media-type separator. An application passes an attacker-controlled malformed data URL containing many slash characters and no comma. the JavaScript regular-expression engine explores many separator placements before rejecting the URL. Synchronous excessive backtracking can block the Node.js event loop and cause denial of service. The affected identifiers are fromDataURI, DATA_URL_PATTERN, data:. This issue is fixed in version 1.20.0.","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: ReDoS in fromDataURI data: URL parser freezes the Node event loop (DoS)","id":"CVE-2026-101903","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"Axios: Header Injection via Inherited headers After Minimal Interceptor","id":"CVE-2026-101904"},"packages":[{"ecosystem":"npm","fixed":["1.20.0"],"introduced":["1.16.1"],"last_affected":[],"package":"axios","purl":null,"source":"GHSA-c29m-xwm3-cm6r"},{"ecosystem":"npm","fixed":["1.20.0"],"introduced":["1.16.1"],"last_affected":[],"package":"axios","purl":"pkg:npm/axios","source":"GHSA-c29m-xwm3-cm6r"}],"prev":{"headline":"Axios: Prototype-Pollution Gadget in the Default Instance Allows Inherited Object.prototype.method to Override HTTP Method","id":"CVE-2026-101902"},"products":["axios"],"published":"2026-09-28","related":[],"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":"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":"2026-09-28","vendors":["axios"]},"summary":"An attacker can cause a denial of service by sending a malformed data URL that triggers excessive backtracking in the Axios library's parser.","url":"https://insights.sbomify.com/CVE-2026-101903/"}