CVE-2026-62948

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Source
https://cve.org/CVERecord?id=CVE-2026-62948
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62948.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-62948
Aliases
  • GHSA-hhmc-92hw-535f
Published
2026-07-15T17:50:43.790Z
Modified
2026-07-17T03:48:15.949645891Z
Severity
  • 9.6 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H CVSS Calculator
Summary
OpenWrt odhcpd/LuCI: unauthenticated DHCPv6 client can inject lease-file lines via FQDN hostname → stored XSS in the LuCI admin UI
Details

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 statefileswritestate6() and statefileswritestate4() 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.

Database specific 
{
    "cwe_ids": [
        "CWE-117",
        "CWE-150",
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62948.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/openwrt/luci

Affected ranges

Type
GIT
Repo
https://github.com/openwrt/luci
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
55379d04fcc3c605003a5001d6135cf02ae6048a
Database specific 
{
    "source": "REFERENCES"
}
Type
GIT
Repo
https://github.com/openwrt/odhcpd
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
68f382690bfaec56d5b1f31c3c31c48bcb642e3a
Database specific 
{
    "source": "REFERENCES"
}
Type
GIT
Repo
https://github.com/openwrt/openwrt
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f0a60eee2fe051741c643ea6118718aae1ef17fb
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "25.12.5"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

Other
reboot
v25.*
v25.12.0
v25.12.0-rc1
v25.12.0-rc2
v25.12.0-rc3
v25.12.0-rc4
v25.12.0-rc5
v25.12.1
v25.12.2
v25.12.3
v25.12.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62948.json"