# CVE-2026-62948

## Summary

- **CVE ID:** CVE-2026-62948
- **Severity:** CRITICAL
- **CVSS Score:** 9.6 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H)
- **CWE:** CWE-79, CWE-117, CWE-150
- **Published:** Jul 15, 2026
- **Last Modified:** Jul 15, 2026

## 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 Products

- openwrt — openwrt (< 25.12.5)

## References

- [CNA](https://github.com/openwrt/openwrt/security/advisories/GHSA-hhmc-92hw-535f)
- [CNA](https://github.com/openwrt/odhcpd/pull/404)
- [CNA](https://github.com/openwrt/luci/commit/55379d04fcc3c605003a5001d6135cf02ae6048a)
- [CNA](https://github.com/openwrt/odhcpd/commit/68f382690bfaec56d5b1f31c3c31c48bcb642e3a)
- [CNA](https://github.com/openwrt/openwrt/releases/tag/v25.12.5)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.58%
- **EPSS Percentile:** 45.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._