Is CVE-2026-108931 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-108931 being exploited in the wild.

How severe is CVE-2026-108931?

Medium severity, with a CVSS score of 4.3, published 12 October 2026.

Is there a fix for CVE-2026-108931?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-108931 attacked?

It is attacked over the network or from the adjacent network, in a network appliance.

Am I affected by CVE-2026-108931?

Check whether you run Netcore NR268 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-108931: Netcore NR268 stored cross-site scripting in DHCP handler

CVE-2026-108931 · Severity: medium · CVSS 4.3 · Published 2026-10-12

The Netcore NR268 router is used to manage networks, including DHCP client assignments and DNS settings. An attacker on the local network can inject malicious code via a DHCP hostname, which then executes in the administrator's browser when viewing the DHCP status page, potentially allowing theft of admin credentials and session hijacking.

Technologies: Netcore NR268. Vendors: Netcore.

Quick answers

Is CVE-2026-108931 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-108931 being exploited in the wild.
How severe is CVE-2026-108931?: Medium severity, with a CVSS score of 4.3, published 12 October 2026.
Which products and versions are affected?: Netcore NR268 1.7.121109.
Is there a fix for CVE-2026-108931?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-108931 attacked?: It is attacked over the network or from the adjacent network, in a network appliance.
Am I affected by CVE-2026-108931?: Check whether you run Netcore NR268 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The dhcp_dynamicip_show.cgi endpoint fails to properly sanitize DHCP hostnames when serializing them into pseudo-JSON, and the web UI parses the response with eval('('+data+')'), enabling stored XSS. An unauthenticated LAN client can request a DHCP lease with a malicious hostname (e.g., <svg/onload=alert(1)>), which is persisted unsanitized and executed in the administrator's browser context when the DHCP status page is opened.

Affected products

Netcore NR268 1.7.121109

Timeline

2026-09-14: disclosed
2026-10-12: advisory

References

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