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CVE-2026-62948 is a stored cross-site scripting vulnerability in OpenWrt affecting versions prior to 25.12.5. The issue arises because odhcpd writes the DHCPv6 client FQDN option 39 hostname into the lease state file without escaping in src/statefiles.c, specifically via statefiles_write_state6() and statefiles_write_state4(). Because newline characters are not sanitized, an unauthenticated DHCPv6 client can inject forged lease entries into the lease file. Those entries are later retrieved by rpcd-mod-luci and rendered by LuCI on the Active DHCPv6 Leases administration page as live HTML, creating a persistent XSS condition in the web interface. The flaw is fundamentally an input-neutralization failure in the lease-writing path that becomes exploitable through unsafe HTML rendering in LuCI.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Уязвимость инъекции имени хоста через DHCPv6, способная привести к хранимой XSS в интерфейсе LuCI при открытии списка DHCP-аренд.
A DHCPv6 hostname-injection vulnerability in OpenWrt that can lead to stored XSS in the LuCI leases page when viewed by an administrator.
A vulnerability in OpenWrt prior to 25.12.5 where unescaped DHCPv6 client hostname data can inject forged lease lines into odhcpd state files and be rendered as live HTML in the LuCI Active DHCPv6 Leases admin page, enabling cross-component injection with severe impact.
A critical stored XSS vulnerability where an unauthenticated DHCPv6 client can inject crafted hostname data into lease files, leading to XSS in the LuCI DHCPv6 leases status page.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.