https://vulnerability.circl.lu Contains only the most 10 recent sightings. http://www.rssboard.org/rss-specification python-feedgen en Mon, 21 Sep 2026 16:35:24 +0000 https://vulnerability.circl.lu/sighting/48c31715-ce62-4234-ba23-795ca3da8d8e/export {"uuid": "48c31715-ce62-4234-ba23-795ca3da8d8e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-85058", "type": "seen", "source": "https://gist.github.com/alon710/6c8180b6898a74f52da1dc6d425e2b77", "content": "# CVE-2026-85058: CVE-2026-85058: Missing Authorization in Moquette MQTT Broker Last Will and Testament Feature\n\n> **CVSS Score:** 7.5\n> **Published:** 2026-09-18\n> **Full Report:** https://cvereports.com/reports/CVE-2026-85058\n\n## Summary\nAn authorization bypass vulnerability exists in the Moquette MQTT broker prior to version 0.18.1. When an MQTT client registers a Last Will and Testament (LWT) topic during its connection setup, the broker fails to perform write-access checks on that topic. Upon an abrupt client disconnection, the broker publishes the registered Will message to subscribers of the unauthorized topic, bypassing configured Access Control Lists (ACLs).\n\n## TL;DR\nMoquette MQTT broker versions before 0.18.1 fail to validate write permissions when executing a client's Last Will and Testament, enabling write-restricted or anonymous clients to publish to protected topics.\n\n## Exploit Status: POC\n\n## Technical Details\n\n- **CWE ID**: CWE-862\n- **Attack Vector**: Network\n- **CVSS v3.1 Score**: 7.5 (High)\n- **EPSS Score**: Not Available\n- **Impact**: Integrity (High)\n- **Exploit Status**: PoC (Proof of Concept)\n- **KEV Status**: Not Listed\n\n## Affected Systems\n\n- Moquette MQTT Broker\n- io.moquette:moquette-broker\n- **moquette-broker**: < 0.18.1 (Fixed in: `0.18.1`)\n\n## Mitigation\n\n- Upgrade the Moquette broker dependency to version 0.18.1 or higher to apply the official authorization validation patch.\n- Disable anonymous connection permissions within the broker configuration to ensure all clients are authenticated before session registration.\n- Enforce network-level monitoring to detect rapid connection establishment and unexpected terminations designed to trigger LWT publications.\n\n**Remediation Steps:**\n1. Identify all deployment instances of the `io.moquette:moquette-broker` dependency within the environment.\n2. Update the project build files (e.g., pom.xml or build.gradle) to reference version 0.18.1 or a newer release.\n3. Audit custom access control implementations to confirm how the static client identity 'WILL_PUBLISHER' and empty usernames are processed.\n4. Verify the configuration of the broker to ensure 'allow_anonymous' is set to 'false' if anonymous connections are not business-critical.\n5. Redeploy the updated broker application and verify that connection termination tests do not result in unauthorized topic writes.\n\n## References\n\n- [Moquette GitHub Security Advisory GHSA-9jjc-fw8x-fmwx](https://github.com/moquette-io/moquette/security/advisories/GHSA-9jjc-fw8x-fmwx)\n- [NVD CVE-2026-85058 Detail](https://nvd.nist.gov/vuln/detail/CVE-2026-85058)\n- [CVE.org CVE-2026-85058 Record](https://www.cve.org/CVERecord?id=CVE-2026-85058)\n\n\n---\n*Generated by [CVEReports](https://cvereports.com/reports/CVE-2026-85058) - Automated Vulnerability Intelligence*", "creation_timestamp": "2026-09-19T02:31:41.134252Z"} {"uuid": "48c31715-ce62-4234-ba23-795ca3da8d8e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-85058", "type": "seen", "source": "https://gist.github.com/alon710/6c8180b6898a74f52da1dc6d425e2b77", "content": "# CVE-2026-85058: CVE-2026-85058: Missing Authorization in Moquette MQTT Broker Last Will and Testament Feature\n\n> **CVSS Score:** 7.5\n> **Published:** 2026-09-18\n> **Full Report:** https://cvereports.com/reports/CVE-2026-85058\n\n## Summary\nAn authorization bypass vulnerability exists in the Moquette MQTT broker prior to version 0.18.1. When an MQTT client registers a Last Will and Testament (LWT) topic during its connection setup, the broker fails to perform write-access checks on that topic. Upon an abrupt client disconnection, the broker publishes the registered Will message to subscribers of the unauthorized topic, bypassing configured Access Control Lists (ACLs).\n\n## TL;DR\nMoquette MQTT broker versions before 0.18.1 fail to validate write permissions when executing a client's Last Will and Testament, enabling write-restricted or anonymous clients to publish to protected topics.\n\n## Exploit Status: POC\n\n## Technical Details\n\n- **CWE ID**: CWE-862\n- **Attack Vector**: Network\n- **CVSS v3.1 Score**: 7.5 (High)\n- **EPSS Score**: Not Available\n- **Impact**: Integrity (High)\n- **Exploit Status**: PoC (Proof of Concept)\n- **KEV Status**: Not Listed\n\n## Affected Systems\n\n- Moquette MQTT Broker\n- io.moquette:moquette-broker\n- **moquette-broker**: < 0.18.1 (Fixed in: `0.18.1`)\n\n## Mitigation\n\n- Upgrade the Moquette broker dependency to version 0.18.1 or higher to apply the official authorization validation patch.\n- Disable anonymous connection permissions within the broker configuration to ensure all clients are authenticated before session registration.\n- Enforce network-level monitoring to detect rapid connection establishment and unexpected terminations designed to trigger LWT publications.\n\n**Remediation Steps:**\n1. Identify all deployment instances of the `io.moquette:moquette-broker` dependency within the environment.\n2. Update the project build files (e.g., pom.xml or build.gradle) to reference version 0.18.1 or a newer release.\n3. Audit custom access control implementations to confirm how the static client identity 'WILL_PUBLISHER' and empty usernames are processed.\n4. Verify the configuration of the broker to ensure 'allow_anonymous' is set to 'false' if anonymous connections are not business-critical.\n5. Redeploy the updated broker application and verify that connection termination tests do not result in unauthorized topic writes.\n\n## References\n\n- [Moquette GitHub Security Advisory GHSA-9jjc-fw8x-fmwx](https://github.com/moquette-io/moquette/security/advisories/GHSA-9jjc-fw8x-fmwx)\n- [NVD CVE-2026-85058 Detail](https://nvd.nist.gov/vuln/detail/CVE-2026-85058)\n- [CVE.org CVE-2026-85058 Record](https://www.cve.org/CVERecord?id=CVE-2026-85058)\n\n\n---\n*Generated by [CVEReports](https://cvereports.com/reports/CVE-2026-85058) - Automated Vulnerability Intelligence*", "creation_timestamp": "2026-09-19T02:31:41.134252Z"} https://vulnerability.circl.lu/sighting/48c31715-ce62-4234-ba23-795ca3da8d8e/export Sat, 19 Sep 2026 02:31:41 +0000 https://vulnerability.circl.lu/sighting/8ed0f415-85dd-4c13-aee4-d99ae95ff057/export {"uuid": "8ed0f415-85dd-4c13-aee4-d99ae95ff057", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-85058", "type": "published-proof-of-concept", "source": "https://github.com/moquette-io/moquette/security/advisories/GHSA-9jjc-fw8x-fmwx", "content": "", "creation_timestamp": "2026-09-18T18:35:02.074500Z"} {"uuid": "8ed0f415-85dd-4c13-aee4-d99ae95ff057", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-85058", "type": "published-proof-of-concept", "source": "https://github.com/moquette-io/moquette/security/advisories/GHSA-9jjc-fw8x-fmwx", "content": "", "creation_timestamp": "2026-09-18T18:35:02.074500Z"} https://vulnerability.circl.lu/sighting/8ed0f415-85dd-4c13-aee4-d99ae95ff057/export Fri, 18 Sep 2026 18:35:02 +0000