{"cve":"CVE-2026-85724","nvd":{"published":"2026-09-23T17:17:17.623","modified":"2026-09-25T13:34:57.140","status":"Analyzed","description":"Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, when pattern-based ACL rules are configured, AuthorizationsCollector.canDoOperation substitutes client ID and username values directly into rules containing %c or %u and then treats the result as an MQTT topic filter. A client that uses + or # in either identity can broaden the substituted filter and gain cross-tenant read and write access. A # identity can also produce an invalid filter that triggers a NullPointerException in Topic.match and disrupts session processing. This issue is fixed in version 0.18.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","score":9.6},"cwes":["CWE-155","CWE-863"],"references":["https://github.com/moquette-io/moquette/commit/b4a98bb3f3425ece476ed073aa080c627c1239af","https://github.com/moquette-io/moquette/releases/tag/v0.18.1","https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq","https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq"],"products":["moquette:moquette"],"source":"nvd","synced_at":"2026-10-19T22:56:02.509636177+00:00"},"epss":{"cve":"CVE-2026-85724","score":0.00316,"percentile":0.24508,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-5f42-97gr-vfhq","url":"https://osv.dev/vulnerability/GHSA-5f42-97gr-vfhq","summary":"Moquette: Pattern-ACL wildcard injection (cross-tenant authorization bypass) plus a remote-unauthenticated DoS cluster, a Will-message authorization bypass, and a cross-session durable-corruption bug","modified":"2026-10-19T19:30:12.063094642Z","packages":[{"ecosystem":"Maven","name":"io.moquette:moquette-broker","purl":"pkg:maven/io.moquette/moquette-broker","ranges":["<0.18.1"],"fixed":["0.18.1"]}]}],"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."]}