{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55838 exists.","fix":"No fix has been published for CVE-2026-55838 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-55838 is a medium-severity missing authorization vulnerability in rustfs, published on 26 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-55838 and fix it if it is affected.\n\nWhat it is: CVE-2026-55838 is a medium-severity missing authorization vulnerability in rustfs, published on 26 Jun 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-2026-55838 exists.\n\nAffected product: rustfs. 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-2026-55838/ (Markdown: https://insights.sbomify.com/CVE-2026-55838/index.md)","id":"CVE-2026-55838","markdown":"https://insights.sbomify.com/CVE-2026-55838/index.md","name":"CVE-2026-55838","record":{"aliases":["GHSA-f5cv-v44x-2xgf"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"RustFS object storage","requires_auth":"low_privilege","summary":"An authenticated user can read sensitive server-wide operational metrics due to missing admin authorization checks on the metrics endpoint.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"RustFS is a distributed object storage system built in Rust. In 1.0.0-beta.7 and earlier, the real-time metrics endpoint at /rustfs/admin/v3/metrics is accessible to any valid IAM user regardless of their assigned policy. Every other admin handler in the codebase calls validate_admin_request to enforce admin-action IAM checks; the MetricsHandler skips this call entirely. A restricted IAM user whose policy grants only access to their own bucket can read server-wide operational metrics including disk I/O statistics, network throughput, scanner cycle timing, and cluster RPC state.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"RustFS: Missing admin authorization on /rustfs/admin/v3/metrics allows any authenticated user to read server metrics","id":"CVE-2026-55838","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Kestra: Stored XSS via custom Markdown [[link]] attribute injection","id":"CVE-2026-55839"},"packages":[],"prev":{"headline":"dbt-mcp: Unauthenticated OAuth Context Endpoint Leaks dbt Platform Tokens","id":"CVE-2026-55837"},"products":["rustfs"],"published":"2026-06-26","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-27","vendors":["rustfs"]},"summary":"An authenticated user can read sensitive server-wide operational metrics due to missing admin authorization checks on the metrics endpoint.","url":"https://insights.sbomify.com/CVE-2026-55838/"}