CVE-2026-62948 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-62948CRITICAL

OpenWrt odhcpd/LuCI: unauthenticated DHCPv6 client can inject lease-file lines via FQDN hostname → stored XSS in the LuCI admin UI

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  C  H  H  H    9.6   .0036   29.0     —

AFFECTED
  Product  Versions     Fixed
  openwrt  < 25.12.5 –  —

TIMELINE
  Jul 14  Reserved by GitHub_M
  Jul 15  EXPLOIT PUBLISHED — CVE-2026-62948 (openwrt). Public exploit reference added.
  Jul 15  Published (CNA: GitHub_M)

CWE-79, CWE-117, CWE-150 · CNA: GitHub_M · CVSS v3.1 · 5 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 14, 2026	Reserved	Reserved by GitHub_M
July 15, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-62948 (openwrt). Public exploit reference added.
July 15, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
openwrt	openwrt	—	< 25.12.5	—

Weaknesses

CWE-79 · CWE-117 · CWE-150

References (5)

https://github.com/openwrt/luci/commit/55379d04fcc3c605003a5001d6135cf02ae6048a [Patch]
https://github.com/openwrt/odhcpd/commit/68f382690bfaec56d5b1f31c3c31c48bcb642e3a [Patch]
https://github.com/openwrt/odhcpd/pull/404 [Issue Tracking, Patch]
https://github.com/openwrt/openwrt/releases/tag/v25.12.5 [Release Notes]
https://github.com/openwrt/openwrt/security/advisories/GHSA-hhmc-92hw-535f [Exploit, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-62948 at cve.org

Vendors: openwrt

Weaknesses: CWE-79 · CWE-117 · CWE-150

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-62948 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.