| Title | Wavlink WL-WN579A3 V220323 Cross Site Scripting |
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| Description | A vulnerability has been found in Wavlink WL-WN579A3 V220323 . Affected by this vulnerability is the function sub_401F80 of the file /cgi-bin/login.cgi. The attack is possible to be carried out remotely. Attackers can send POST requests with page=login —no login required .Performing a manipulation of the argument hostname results in XSS. We found a XSS vulnerability in login.cgi that could be triggered by an attacker through carefully crafted packet requests:In ftext function,the router compare the page parameter.When the value of page is login, the function sub_401340 will be called.This function defines a variable hostname, retrieves its value from the request packet, uses the sprintf function to concatenate it into v37, and finally passes the result to sub_401F80 for processing.However，the sub_401F80 function creates a response packet and places the unfiltered value of the hostname into the packet. |
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| Source | ⚠️ https://github.com/Litengzheng/vul_db/blob/main/WL-WN579A3/vul_16/README.md |
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| User | LtzHust2 (UID 95662) |
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| Submission | 03/21/2026 22:45 (28 days ago) |
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| Moderation | 04/18/2026 17:52 (28 days later) |
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| Status | Accepted |
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| VulDB entry | 358196 [Wavlink WL-WN579A3 220323 /cgi-bin/login.cgi sub_401F80 Hostname cross site scripting] |
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| Points | 20 |
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