CVE-2026-62948
CRITICAL SEVERITYCVSS Score & Metrics
Base Score
9.6 / 10
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Vulnerability Description
OpenWrt is a Linux operating system targeting embedded devices. Prior to 25.12.5, odhcpd writes a DHCPv6 client FQDN option 39 hostname into /tmp/odhcpd.leases through src/statefiles.c statefiles_write_state6() and statefiles_write_state4() without escaping, allowing newline injection of forged lease lines that LuCI rpcd-mod-luci getDHCPLeases displays through htdocs/luci-static/resources/view/status/include/40_dhcp.js and htdocs/luci-static/resources/luci.js dom.append as live HTML in the Active DHCPv6 Leases admin page. This vulnerability is fixed in 25.12.5.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-79
Source
NVD
Vendor
openwrt
Product
openwrt
External References
- https://github.com/openwrt/luci/commit/55379d04fcc3c605003a5001d6135cf02ae6048a
- https://github.com/openwrt/odhcpd/commit/68f382690bfaec56d5b1f31c3c31c48bcb642e3a
- https://github.com/openwrt/odhcpd/pull/404
- https://github.com/openwrt/openwrt/releases/tag/v25.12.5
- https://github.com/openwrt/openwrt/security/advisories/GHSA-hhmc-92hw-535f
- https://github.com/openwrt/openwrt/security/advisories/GHSA-hhmc-92hw-535f
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