{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-55897", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-17T16:59:42.760Z", "datePublished": "2026-09-21T19:29:37.003Z", "dateUpdated": "2026-09-21T20:06:41.423Z" }, "containers": { "cna": { "title": "luci-app-advanced-reboot read ACL exposes /bin/sh through file.exec, allowing delegated users to run commands as root", "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" } ] } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" } } ], "references": [ { "name": "https://github.com/openwrt/luci/security/advisories/GHSA-vj96-f37g-37f6", "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/openwrt/luci/security/advisories/GHSA-vj96-f37g-37f6" }, { "name": "https://github.com/openwrt/luci/pull/8710", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/openwrt/luci/pull/8710" }, { "name": "https://github.com/openwrt/luci/commit/2df00deb122093cbf429266ffef7ad06aaecb48f", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/openwrt/luci/commit/2df00deb122093cbf429266ffef7ad06aaecb48f" }, { "name": "https://github.com/openwrt/luci/commit/f85102548ee8325bfd581a0327b210b5f7670829", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/openwrt/luci/commit/f85102548ee8325bfd581a0327b210b5f7670829" } ], "affected": [ { "vendor": "openwrt", "product": "luci", "versions": [ { "version": "< 1.1.2-6", "status": "affected" } ] } ], "providerMetadata": { "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-21T19:29:37.003Z" }, "descriptions": [ { "lang": "en", "value": "luci-app-advanced-reboot is a LuCI (web interface) application for OpenWrt that provides a way to reboot your router into an alternative firmware partition or perform reboot operations directly from the web UI. Prior to 1.1.2-6, the luci-app-advanced-reboot read ACL in applications/luci-app-advanced-reboot/root/usr/share/rpcd/acl.d/luci-app-advanced-reboot.json grants rpcd file.exec permission for the general shell interpreter /bin/sh. An authenticated delegated session with that read ACL can supply caller-controlled params; rpcd authorizes the executable path and passes those arguments to the shell, allowing arbitrary commands to execute as root. Builds without the /bin/sh exec grant, including the checked openwrt-24.10 and openwrt-23.05 branches, are not affected by this specific chain. This vulnerability is fixed in 1.1.2-6." } ], "source": { "advisory": "GHSA-vj96-f37g-37f6", "discovery": "UNKNOWN" } }, "adp": [ { "references": [ { "url": "https://github.com/openwrt/luci/security/advisories/GHSA-vj96-f37g-37f6", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-21T20:05:24.106310Z", "id": "CVE-2026-55897", "options": [ { "Exploitation": "poc" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-21T20:06:41.423Z" } } ] } }