Wavlink WL-WN579A3 220323 /cgi-bin/login.cgi sub_401F80 Hostname cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k2.51

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.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔒

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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: 216::103

Submitinfo

Accepted

  • Submit #785303: Wavlink WL-WN579A3 V220323 Cross Site Scripting (by LtzHust2)

Once again VulDB remains the best source for vulnerability data.

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