{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-88038 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-88038 is a medium-severity vulnerability in cookies, published on 10 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-2026-88038 and fix it if it is affected.\n\nWhat it is: CVE-2026-88038 is a medium-severity vulnerability in cookies, published on 10 Sep 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-2026-88038 in the wild and no public exploit code.\n\nAffected product: cookies. 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.\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-2026-88038/ (Markdown: https://insights.sbomify.com/CVE-2026-88038/index.md)","id":"CVE-2026-88038","markdown":"https://insights.sbomify.com/CVE-2026-88038/index.md","name":"CVE-2026-88038","record":{"aliases":["DEBIAN-CVE-2026-88038","GHSA-x44v-5gxf-r6hf","UBUNTU-CVE-2026-88038"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Node.js cookie library","requires_auth":"none","summary":"Attackers can inject cookie attributes like SameSite or HttpOnly if applications pass untrusted data to domain or path options, bypassing security controls.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"openjs","cpe":[],"cvss":{"score":4.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"cookies is a Node.js library for reading and writing HTTP cookies, used by Koa via ctx.cookies. In versions before 0.9.2 the library validates the cookie name and value against character sets that reject the semicolon separator, but the domain and path options are checked only against a permissive RFC 7230 field-content matcher that allows semicolons, and both are written into the Set-Cookie header unescaped. An application that passes untrusted or request-derived data into the domain or path option can therefore inject additional cookie attributes, overriding SameSite, Secure, HttpOnly, or Domain on the cookies the application issues. This is a Set-Cookie attribute injection issue (CWE-74). The issue is fixed in cookies 0.9.2, which validates domain and path against RFC 6265 character sets. As a workaround, keep domain and path application-set rather than derived from untrusted input.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"cookies vulnerable to Set-Cookie attribute injection via unvalidated domain and path options","id":"CVE-2026-88038","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Apache Tomcat: HTTP/2 trailer header cross-contamination","id":"CVE-2026-88041"},"packages":[],"prev":{"headline":"Bold Page Builder \u003c= 5.7.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via bt_bb_service title","id":"CVE-2026-88037"},"products":["cookies"],"published":"2026-09-10","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-10","vendors":["cookies"]},"summary":"Attackers can inject cookie attributes like SameSite or HttpOnly if applications pass untrusted data to domain or path options, bypassing security controls.","url":"https://insights.sbomify.com/CVE-2026-88038/"}