{"cve":"CVE-2026-27734","nvd":{"published":"2026-02-27T20:21:38.950","modified":"2026-06-17T10:27:34.413","status":"Analyzed","description":"Beszel is a server monitoring platform. Prior to version 0.18.2, the hub's authenticated API endpoints GET /api/beszel/containers/logs and GET /api/beszel/containers/info pass the user-supplied \"container\" query parameter to the agent without validation. The agent constructs Docker Engine API URLs using fmt.Sprintf with the raw value instead of url.PathEscape(). Since Go's http.Client does not sanitize `../` sequences from URL paths sent over unix sockets, an authenticated user (including readonly role) can traverse to arbitrary Docker API endpoints on agent hosts, exposing sensitive infrastructure details. Version 0.18.4 fixes the issue.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-22"],"references":["https://github.com/henrygd/beszel/releases/tag/v0.18.4","https://github.com/henrygd/beszel/security/advisories/GHSA-phwh-4f42-gwf3"],"products":["beszel:beszel"],"source":"nvd","synced_at":"2026-10-19T22:24:17.937441719+00:00"},"epss":{"cve":"CVE-2026-27734","score":0.00545,"percentile":0.45736,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-phwh-4f42-gwf3","url":"https://osv.dev/vulnerability/GHSA-phwh-4f42-gwf3","summary":"Beszel: Docker API has a Path Traversal Vulnerability via Unsanitized Container ID","modified":"2026-03-23T04:56:15.407121319Z","packages":[{"ecosystem":"Go","name":"github.com/henrygd/beszel","purl":"pkg:golang/github.com/henrygd/beszel","ranges":["<0.18.4"],"fixed":["0.18.4"]}]},{"id":"GO-2026-4571","url":"https://osv.dev/vulnerability/GO-2026-4571","summary":"Beszel: Docker API has a Path Traversal Vulnerability via Unsanitized Container ID in github.com/henrygd/beszel","modified":"2026-03-23T04:52:45.146949Z","packages":[{"ecosystem":"Go","name":"github.com/henrygd/beszel","purl":"pkg:golang/github.com/henrygd/beszel","ranges":["<0.18.4"],"fixed":["0.18.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}