{"answers":{"affected":"11 open source packages ship an affected version, including github.com/patrickhener/goshs, github.com/patrickhener/goshs/v2 and goshs.de/goshs.","exploited":"There is no known exploitation of CVE-2026-66063 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-66063 is a medium-severity path traversal vulnerability in goshs-labs goshs, published on 28 Jul 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-2026-66063 and fix it if it is affected.\n\nWhat it is: CVE-2026-66063 is a medium-severity path traversal vulnerability in goshs-labs goshs, published on 28 Jul 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-2026-66063 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/patrickhener/goshs (Go): affected all versions; no fix listed\n- github.com/patrickhener/goshs (Go): affected all versions up to 1.1.4; no fix listed\n- github.com/patrickhener/goshs (Go): affected all versions up to 1.1.4; no fix listed\n- github.com/patrickhener/goshs/v2 (Go): affected all versions; fixed in 2.1.5-0.20260727065949-f3ef599e4091\n- github.com/patrickhener/goshs/v2 (Go): affected all versions; fixed in 2.1.5-0.20260727065949-f3ef599e4091\n- goshs.de/goshs (Go): affected all versions; no fix listed\n- goshs.de/goshs (Go): affected all versions up to 1.1.4; no fix listed\n- goshs.de/goshs (Go): affected all versions up to 1.1.4; no fix listed\n- goshs.de/goshs/v2 (Go): affected all versions; fixed in 2.1.5-0.20260727065949-f3ef599e4091\n- goshs.de/goshs/v2 (Go): affected all versions; fixed in 2.1.5-0.20260727065949-f3ef599e4091\n- goshs.de/goshs/v2 (Go): affected all versions; fixed in 2.1.5-0.20260727065949-f3ef599e4091\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-2026-66063/ (Markdown: https://insights.sbomify.com/CVE-2026-66063/index.md)","id":"CVE-2026-66063","markdown":"https://insights.sbomify.com/CVE-2026-66063/index.md","name":"CVE-2026-66063","record":{"aliases":["GHSA-wg2q-39h6-66x9","GO-2026-6137"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Go file server","requires_auth":"none","summary":"An unauthenticated attacker can upload files outside the served directory via path traversal in the multipart upload handler.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"goshs is a feature-rich single-binary file server for red teamers and developers. Prior to 2.1.5, the httpserver/updown.go multipart upload handler split part.FileName() on / but did not reject .., allowing an unauthenticated upload with filename .. to create a file outside the served tree. This issue is fixed in version 2.1.5.","ecosystems":["Go"],"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":"goshs has a Path Traversal issue","id":"CVE-2026-66063","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":11,"n_references":2,"next":{"headline":"goshs has ACL Bypass \u0026 Path Traversal","id":"CVE-2026-66064"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/patrickhener/goshs","purl":"pkg:golang/github.com/patrickhener/goshs","source":"GO-2026-6137"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.1.4"],"package":"github.com/patrickhener/goshs","purl":null,"source":"GHSA-wg2q-39h6-66x9"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.1.4"],"package":"github.com/patrickhener/goshs","purl":"pkg:golang/github.com/patrickhener/goshs","source":"GHSA-wg2q-39h6-66x9"},{"ecosystem":"Go","fixed":["2.1.5-0.20260727065949-f3ef599e4091"],"introduced":["0"],"last_affected":[],"package":"github.com/patrickhener/goshs/v2","purl":null,"source":"GHSA-wg2q-39h6-66x9"},{"ecosystem":"Go","fixed":["2.1.5-0.20260727065949-f3ef599e4091"],"introduced":["0"],"last_affected":[],"package":"github.com/patrickhener/goshs/v2","purl":"pkg:golang/github.com/patrickhener/goshs/v2","source":"GHSA-wg2q-39h6-66x9"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"goshs.de/goshs","purl":"pkg:golang/goshs.de/goshs","source":"GO-2026-6137"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.1.4"],"package":"goshs.de/goshs","purl":null,"source":"GHSA-wg2q-39h6-66x9"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.1.4"],"package":"goshs.de/goshs","purl":"pkg:golang/goshs.de/goshs","source":"GHSA-wg2q-39h6-66x9"},{"ecosystem":"Go","fixed":["2.1.5-0.20260727065949-f3ef599e4091"],"introduced":["0"],"last_affected":[],"package":"goshs.de/goshs/v2","purl":null,"source":"GHSA-wg2q-39h6-66x9"},{"ecosystem":"Go","fixed":["2.1.5-0.20260727065949-f3ef599e4091"],"introduced":["0"],"last_affected":[],"package":"goshs.de/goshs/v2","purl":"pkg:golang/goshs.de/goshs/v2","source":"GHSA-wg2q-39h6-66x9"},{"ecosystem":"Go","fixed":["2.1.5-0.20260727065949-f3ef599e4091"],"introduced":["0"],"last_affected":[],"package":"goshs.de/goshs/v2","purl":"pkg:golang/goshs.de/goshs/v2","source":"GO-2026-6137"}],"prev":{"headline":"SvelteKit: ReDoS (O(n^2)) in content negotiation — unauthenticated DoS via the Accept header","id":"CVE-2026-66062"},"products":["goshs"],"published":"2026-07-28","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":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-29","vendors":["goshs-labs"]},"summary":"An unauthenticated attacker can upload files outside the served directory via path traversal in the multipart upload handler.","url":"https://insights.sbomify.com/CVE-2026-66063/"}