CVE-2026-6559 | Wavlink WL-WN579A3 220323 /cgi-bin/login.cgi sub_401F80 Hostname cross site scripting

VDB-358196 · SUBMIT #785303 · CVE-2026-6559 WAVLINK WL-WN579A3 220323 /CGI-BIN/LOGIN.CGI SUB_401F80 HOSTNAME CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.1 $0-$5k 1.77 Summaryinfo A vulnerability was found in Wavlink WL-WN579A3 220323. It has been declared as problematic. This vulnerability affects the function sub_401F80 of the file /cgi-bin/login.cgi. Such manipulation of the argument Hostname leads to cross site scripting. This vulnerability is documented as CVE-2026-6559. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product. Detailsinfo A vulnerability was found in Wavlink WL-WN579A3 220323 and classified as problematic. Affected by this issue is the function sub_401F80 of the file /cgi-bin/login.cgi. The manipulation of the argument hostname with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-6559. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product. Upgrading eliminates this vulnerability. The upgrade is hosted for download at dl.wavlink.com. Productinfo Vendor Wavlink Name WL-WN579A3 Version 220323 License commercial CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.3 VulDB Meta Temp Score: 4.1 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Cross site scripting CWE: CWE-79 / CWE-94 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: dl.wavlink.com Timelineinfo 04/18/2026 Advisory disclosed 04/18/2026 +0 days VulDB entry created 04/18/2026 +0 days VulDB entry last update Sourcesinfo Advisory: github.com Status: Confirmed CVE: CVE-2026-6559 (🔒) GCVE (CVE): GCVE-0-2026-6559 GCVE (VulDB): GCVE-100-358196 Entryinfo Created: 04/18/2026 17:57 Changes: 04/18/2026 17:57 (56) Complete: 🔍 Submitter: LtzHust2 Cache ID: 99:176:101 Submitinfo Accepted Submit #785303: Wavlink WL-WN579A3 V220323 Cross Site Scripting (by LtzHust2) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸