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    CVE-2026-62948

    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.

    Published:Jul 15, 2026
    Last Modified:Jul 15, 2026
    EPS:Jul 15, 2026
    EPSS Score:
    CVSS Score:9.6

    Affected Products

    Vendor
    Openwrt
    Product
    Openwrt

    Exploits

    https://github.com/openwrt/openwrt/security/advisories/GHSA-hhmc-92hw-535fhttps://github.com/openwrt/openwrt/security/advisories/GHSA-hhmc-92hw-535f

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High