CVE-2026-62948
Stored newline/HTML injection leads to admin UI XSS in OpenWrt odhcpd (fixed in 25.12.5).
Is CVE-2026-62948 being exploited?
Not confirmed. CVE-2026-62948 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.58% probability of exploitation in the next 30 days.
How severe is CVE-2026-62948?
CVE-2026-62948 is rated Critical with a CVSS score of 9.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-62948?
Yes. A fix has been recorded for CVE-2026-62948. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-62948 affect?
CVE-2026-62948 affects OpenWrt < 25.12.5, odhcpd, LuCI rpcd-mod-luci, LuCI web UI. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-62948?
Upgrade OpenWrt to 25.12.5+; restrict DHCPv6 client access and isolate management interface.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker-controlled DHCPv6 FQDN can inject HTML/newlines into lease file, causing stored XSS in LuCI admin UI, enabling JS execution, session theft, config changes or router compromise.
Immediate action required
- affected< 25.12.5
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.