{"id":"CVE-2026-23520","state":"PUBLISHED","title":"Arcane has a Command Injection in Arcane Updater Lifecycle Labels Enables RCE","description":"Arcane provides modern docker management. Prior to 1.13.0, Arcane has a command injection in the updater service. Arcane’s updater service supported lifecycle labels com.getarcaneapp.arcane.lifecycle.pre-update and com.getarcaneapp.arcane.lifecycle.post-update that allowed defining a command to run before or after a container update. The label value is passed directly to /bin/sh -c without sanitization or validation. Because any authenticated user (not limited to administrators) can create projects through the API, an attacker can create a project that specifies one of these lifecycle labels with a malicious command. When an administrator later triggers a container update (either manually or via scheduled update checks), Arcane reads the lifecycle label and executes its value as a shell command inside the container. This vulnerability is fixed in 1.13.0.","publishedAt":"2026-01-15T19:20:22.434Z","updatedAt":"2026-01-15T19:58:45.182Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["getarcaneapp arcane"],"affected":[{"vendor":"getarcaneapp","product":"arcane","versions":[{"version":"< 1.13.0","status":"affected"}]}],"references":["https://github.com/getarcaneapp/arcane/security/advisories/GHSA-gjqq-6r35-w3r8","https://github.com/getarcaneapp/arcane/pull/1468","https://github.com/getarcaneapp/arcane/commit/5a9c2f92e11f86f8997da8c672844468f930b7e4","https://github.com/getarcaneapp/arcane/releases/tag/v1.13.0"],"weaknesses":["CWE-78"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23520.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23520","state":"PUBLISHED","datePublished":"2026-01-15T19:20:22.434Z","dateUpdated":"2026-01-15T19:58:45.182Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-01-13T18:22:43.980Z"},"containers":{"cna":{"title":"Arcane has a Command Injection in Arcane Updater Lifecycle Labels Enables RCE","descriptions":[{"lang":"en","value":"Arcane provides modern docker management. Prior to 1.13.0, Arcane has a command injection in the updater service. Arcane’s updater service supported lifecycle labels com.getarcaneapp.arcane.lifecycle.pre-update and com.getarcaneapp.arcane.lifecycle.post-update that allowed defining a command to run before or after a container update. The label value is passed directly to /bin/sh -c without sanitization or validation. Because any authenticated user (not limited to administrators) can create projects through the API, an attacker can create a project that specifies one of these lifecycle labels with a malicious command. When an administrator later triggers a container update (either manually or via scheduled update checks), Arcane reads the lifecycle label and executes its value as a shell command inside the container. This vulnerability is fixed in 1.13.0."}],"affected":[{"vendor":"getarcaneapp","product":"arcane","versions":[{"version":"< 1.13.0","status":"affected"}]}],"references":[{"url":"https://github.com/getarcaneapp/arcane/security/advisories/GHSA-gjqq-6r35-w3r8","name":"https://github.com/getarcaneapp/arcane/security/advisories/GHSA-gjqq-6r35-w3r8","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/getarcaneapp/arcane/pull/1468","name":"https://github.com/getarcaneapp/arcane/pull/1468","tags":["x_refsource_MISC"]},{"url":"https://github.com/getarcaneapp/arcane/commit/5a9c2f92e11f86f8997da8c672844468f930b7e4","name":"https://github.com/getarcaneapp/arcane/commit/5a9c2f92e11f86f8997da8c672844468f930b7e4","tags":["x_refsource_MISC"]},{"url":"https://github.com/getarcaneapp/arcane/releases/tag/v1.13.0","name":"https://github.com/getarcaneapp/arcane/releases/tag/v1.13.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","lang":"en","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-01-15T19:20:22.434Z"},"source":{"advisory":"GHSA-gjqq-6r35-w3r8","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-15T19:58:38.291447Z","id":"CVE-2026-23520","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-15T19:58:45.182Z"}}]}}}