What is CVE-2026-18787?

CVE-2026-18787 is a high-severity vulnerability in Gl.inet Ax1800, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.8/10. Published 2026-08-04.

How severe is CVE-2026-18787?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Gl.inet Ax1800

CVE-2026-18787

A vulnerability was identified in GL.iNet AX1800 up to 4.8.3. The affected element is the function remove_rule of the file /usr/share/gl-ngx/oui-rpc.lua of the component RPC Endpoint. The manipulation of the argument args.id leads to comma…

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Gl.inet Ax1800 — versions 4.8.0, 4.8.1, 4.8.2

Weakness classification (CWE)

References

cna@vuldb.com (exploit)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)

Frequently asked questions

What is CVE-2026-18787?: CVE-2026-18787 is a high-severity vulnerability in Gl.inet Ax1800, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.8/10. Published 2026-08-04.
How severe is CVE-2026-18787?: High severity. CVSS v3 base score is 8.8 out of 10.