{"id":"CVE-2026-111057","state":"PUBLISHED","title":"Mercury: Unauthenticated Remote Code Execution in /api/terminals - access control bypass","description":"Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. From 3.0.0 until 3.2.4, a missing comma in BLOCKED_PATTERNS concatenates the /lab and /api/terminals regular-expression literals. Requests to /api/terminals therefore bypass the anonymous endpoint blocklist and reach Jupyter Server's terminal API. An unauthenticated attacker can use the resulting interactive operating-system shell to execute commands and access data available to the Mercury process. This issue is fixed in version 3.2.4.","publishedAt":"2026-10-19T16:04:07.065Z","updatedAt":"2026-10-28T15:31:24.524Z","severity":{"score":10,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["mljar mercury"],"affected":[{"vendor":"mljar","product":"mercury","versions":[{"version":">= 3.0.0, < 3.2.4","status":"affected"}]}],"references":["https://github.com/mljar/mercury/security/advisories/GHSA-f8c7-rwf9-fmgm","https://github.com/mljar/mercury/commit/8c467129037ee9df269d543ac217ffd33b97bf3f","https://github.com/mljar/mercury/releases/tag/v3.2.4"],"weaknesses":["CWE-185","CWE-284"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/111xxx/CVE-2026-111057.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-111057","state":"PUBLISHED","datePublished":"2026-10-19T16:04:07.065Z","dateUpdated":"2026-10-28T15:31:24.524Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-15T12:47:13.664Z"},"containers":{"cna":{"title":"Mercury: Unauthenticated Remote Code Execution in /api/terminals - access control bypass","descriptions":[{"lang":"en","value":"Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. From 3.0.0 until 3.2.4, a missing comma in BLOCKED_PATTERNS concatenates the /lab and /api/terminals regular-expression literals. Requests to /api/terminals therefore bypass the anonymous endpoint blocklist and reach Jupyter Server's terminal API. An unauthenticated attacker can use the resulting interactive operating-system shell to execute commands and access data available to the Mercury process. This issue is fixed in version 3.2.4."}],"affected":[{"vendor":"mljar","product":"mercury","versions":[{"version":">= 3.0.0, < 3.2.4","status":"affected"}]}],"references":[{"url":"https://github.com/mljar/mercury/security/advisories/GHSA-f8c7-rwf9-fmgm","name":"https://github.com/mljar/mercury/security/advisories/GHSA-f8c7-rwf9-fmgm","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/mljar/mercury/commit/8c467129037ee9df269d543ac217ffd33b97bf3f","name":"https://github.com/mljar/mercury/commit/8c467129037ee9df269d543ac217ffd33b97bf3f","tags":["x_refsource_MISC"]},{"url":"https://github.com/mljar/mercury/releases/tag/v3.2.4","name":"https://github.com/mljar/mercury/releases/tag/v3.2.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-185","lang":"en","description":"CWE-185: Incorrect Regular Expression","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-284","lang":"en","description":"CWE-284: Improper Access Control","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-19T16:04:07.065Z"},"source":{"advisory":"GHSA-f8c7-rwf9-fmgm","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/mljar/mercury/security/advisories/GHSA-f8c7-rwf9-fmgm","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-28T15:31:16.899020Z","id":"CVE-2026-111057","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-28T15:31:24.524Z"}}]}}}