CVEvulnerability

CVE-2026-62948

9.6 CRITICAL Published 2026-07-15 Modified 2026-07-21 Official page ↗
Status
Analyzed
Published
2026-07-15
Last modified
2026-07-21
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.6 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Weaknesses
CWE-117, CWE-150, CWE-79

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.

Affected configurations

• openwrt openwrt (< 25.12.5)

Related

Weakness · CWE (3)

  • CWE-117 Improper Output Neutralization for Logs weakness
  • CWE-150 Improper Neutralization of Escape, Meta, or Control Sequences weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References