{"answers":{"affected":"2 open source packages ship an affected version, including guzzlehttp/guzzle.","exploited":"There is no known exploitation of CVE-2026-67355 in the wild and no public exploit code.","fix":"Upgrade guzzlehttp/guzzle to 7.15.1 or later.","what":"CVE-2026-67355 is a high-severity vulnerability in guzzle, published on 1 Aug 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-2026-67355 and fix it if it is affected.\n\nWhat it is: CVE-2026-67355 is a high-severity vulnerability in guzzle, published on 1 Aug 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-2026-67355 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- guzzlehttp/guzzle (Packagist): affected all versions; fixed in 7.15.1\n- guzzlehttp/guzzle (Packagist): affected all versions; fixed in 7.15.1\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-2026-67355/ (Markdown: https://insights.sbomify.com/CVE-2026-67355/index.md)","id":"CVE-2026-67355","markdown":"https://insights.sbomify.com/CVE-2026-67355/index.md","name":"CVE-2026-67355","record":{"aliases":["DEBIAN-CVE-2026-67355","GHSA-wm3w-8rrp-j577","MINI-39cp-76w6-73qx","MINI-f559-rh4q-xhp9","MINI-jxr3-w9w3-6729","MINI-m5gr-jwpq-f3h3","MINI-p4x9-qc62-x49q","MINI-qr48-r2q3-cvm5","MINI-x3c2-hmjw-vccm","MINI-xxx5-9452-6gqh","UBUNTU-CVE-2026-67355"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"PHP HTTP client library","requires_auth":"none","summary":"Attackers controlling child hosts can steal host-only cookies, including session identifiers and tokens, from the parent host's cookie jar.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-201","name":"Insertion of Sensitive Information Into Sent Data"}],"description":"guzzlehttp/guzzle versions before 7.15.1 fail to preserve host-only cookie scope, storing the request host in the Domain field instead of marking cookies as host-only. Attackers controlling child hosts can receive host-only cookies intended only for parent hosts, potentially disclosing session identifiers and authorization tokens when the same cookie jar is reused across trust boundaries.","ecosystems":["Packagist"],"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":"guzzlehttp/guzzle before 7.15.1 Host-only Cookie Scope","id":"CVE-2026-67355","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"ArcadeDB before 26.7.3 Privilege Escalation via JavaScript Trigger","id":"CVE-2026-67356"},"packages":[{"ecosystem":"Packagist","fixed":["7.15.1"],"introduced":["0"],"last_affected":[],"package":"guzzlehttp/guzzle","purl":null,"source":"GHSA-wm3w-8rrp-j577"},{"ecosystem":"Packagist","fixed":["7.15.1"],"introduced":["0"],"last_affected":[],"package":"guzzlehttp/guzzle","purl":"pkg:composer/guzzlehttp/guzzle","source":"GHSA-wm3w-8rrp-j577"}],"prev":{"headline":"guzzlehttp/guzzle before 7.15.1 URI Fragment Disclosure via Referer","id":"CVE-2026-67354"},"products":["guzzle"],"published":"2026-08-01","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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-08","vendors":["guzzle"]},"summary":"Attackers controlling child hosts can steal host-only cookies, including session identifiers and tokens, from the parent host's cookie jar.","url":"https://insights.sbomify.com/CVE-2026-67355/"}