Vulnerability · Published Aug 12, 2026 · Assigned by TPLink
CVE-2026-15141Referer Validation Bypass in TL-WR820N Web Management Interface
Medium 5.3
In plain English
A medium-severity security flaw in TL-WR820N v2 from TP-Link Systems Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Official description
The web interface of the affected device relies on the HTTP referrer header as part of request validation. Requests containing empty Referer value, or omitting the Referer header entirely, may be accepted and processed due to insufficient validation logic. Successful exploitation may allow an adjacent attacker with access to the web management interface to obtain device configuration details and other sensitive information.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TP-Link Systems Inc. | TL-WR820N v2 | 0 – before 1.15.20 Build 260611 Rel.29552n |
Weakness: CWE-346 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N