CVE-2026-61876
CVSS v3
8.8
HIGH
EPSS Score
1.3 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
LuCI versions fail to properly encode DHCPv6 lease hostnames before rendering in status tables, allowing adjacent network attackers to inject HTML markup. Attackers can send a DHCPv6 Client FQDN containing script tags that execute in the administrator's browser when viewing DHCP lease pages.
Technical details
- Published
- 2026-07-12
- Last Modified
- 2026-07-13
- Exploit-DB
- EDB-52637
Frequently asked questions
What is CVE-2026-61876?
LuCI versions fail to properly encode DHCPv6 lease hostnames before rendering in status tables, allowing adjacent network attackers to inject HTML markup. Attackers can send a DHCPv6 Client FQDN containing script tags that execute in the administrator's browser when viewing DHCP lease pages.
Is CVE-2026-61876 actively exploited?
Active exploitation of CVE-2026-61876 has not been confirmed. Its EPSS score was 1.3% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-61876?
CVE-2026-61876 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2026-61876 affecting your environment?
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