CVE-2026-55897

{"id": "CVE-2026-55897", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-55897", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-21T20:05:24.106310Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "openwrt", "product": "luci", "versions": [{"status": "affected", "version": "< 1.1.2-6"}]}]}], "published": "2026-09-21T20:17:26.670", "references": [{"url": "https://github.com/openwrt/luci/commit/2df00deb122093cbf429266ffef7ad06aaecb48f", "source": "security-advisories@github.com"}, {"url": "https://github.com/openwrt/luci/commit/f85102548ee8325bfd581a0327b210b5f7670829", "source": "security-advisories@github.com"}, {"url": "https://github.com/openwrt/luci/pull/8710", "source": "security-advisories@github.com"}, {"url": "https://github.com/openwrt/luci/security/advisories/GHSA-vj96-f37g-37f6", "source": "security-advisories@github.com"}, {"url": "https://github.com/openwrt/luci/security/advisories/GHSA-vj96-f37g-37f6", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-78"}]}], "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."}], "lastModified": "2026-09-24T21:25:27.050", "sourceIdentifier": "security-advisories@github.com"}