{"answers":{"affected":"4 open source packages ship an affected version, including goshs.de/goshs/v2 and goshs.de/goshs.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-50138 exists.","fix":"Upgrade goshs.de/goshs/v2 to 2.1.0 or later.","what":"CVE-2026-50138 is a high-severity missing authorization vulnerability in patrickhener goshs, published on 18 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-50138 and fix it if it is affected.\n\nWhat it is: CVE-2026-50138 is a high-severity missing authorization vulnerability in patrickhener goshs, published on 18 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-50138 exists.\n\nAffected packages and fixed versions:\n- goshs.de/goshs/v2 (Go): affected all versions; fixed in 2.1.0\n- goshs.de/goshs/v2 (Go): affected all versions; fixed in 2.1.0\n- goshs.de/goshs/v2 (Go): affected all versions; fixed in 2.1.0\n- goshs.de/goshs (Go): affected all versions; no fix listed\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-2026-50138/ (Markdown: https://insights.sbomify.com/CVE-2026-50138/index.md)","id":"CVE-2026-50138","markdown":"https://insights.sbomify.com/CVE-2026-50138/index.md","name":"CVE-2026-50138","record":{"aliases":["GHSA-3whc-qvhv-xqjp","GO-2026-5878"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Go WebDAV server","requires_auth":"low_privilege","summary":"Authenticated WebDAV clients can modify or delete files despite read-only or upload-only restrictions, bypassing intended access controls.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"description":"goshs is a SimpleHTTPServer written in Go. Prior to version 2.1.0, when `goshs` is launched with WebDAV enabled (`-w`), the mode-restriction flags `--read-only`, `--upload-only`, and `--no-delete` are enforced only on the primary HTTP port. The WebDAV port is wired straight to `golang.org/x/net/webdav.Handler` with no equivalent guard, so an authenticated WebDAV client can `PUT`, `DELETE`, `MKCOL`, `MOVE`, and `COPY` despite the operator's stated intent. Version 2.1.0 patches the issue.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"goshs: WebDAV listener ignores --read-only, --upload-only, and --no-delete mode flags","id":"CVE-2026-50138","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":4,"n_references":1,"next":{"headline":"goshs: Share-link ?token=… redemption races past download limit","id":"CVE-2026-50139"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"goshs.de/goshs","purl":"pkg:golang/goshs.de/goshs","source":"GO-2026-5878"},{"ecosystem":"Go","fixed":["2.1.0"],"introduced":["0"],"last_affected":[],"package":"goshs.de/goshs/v2","purl":null,"source":"GHSA-3whc-qvhv-xqjp"},{"ecosystem":"Go","fixed":["2.1.0"],"introduced":["0"],"last_affected":[],"package":"goshs.de/goshs/v2","purl":"pkg:golang/goshs.de/goshs/v2","source":"GHSA-3whc-qvhv-xqjp"},{"ecosystem":"Go","fixed":["2.1.0"],"introduced":["0"],"last_affected":[],"package":"goshs.de/goshs/v2","purl":"pkg:golang/goshs.de/goshs/v2","source":"GO-2026-5878"}],"prev":{"headline":"Budibase: POST /api/attachments/:datasourceId/url is unauthenticated and lets anonymous callers mint S3 PUT pre-signed URLs using stored datasource IAM credentials","id":"CVE-2026-50137"},"products":["goshs"],"published":"2026-08-18","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":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-19","vendors":["patrickhener"]},"summary":"Authenticated WebDAV clients can modify or delete files despite read-only or upload-only restrictions, bypassing intended access controls.","url":"https://insights.sbomify.com/CVE-2026-50138/"}