CVE-2026-4544: Wavlink WL-WN578W2 POST Request login.cgi cross site scripting

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-22 · updated 2026-06-17
Weakness: CWE-79

Description

A vulnerability was determined in Wavlink WL-WN578W2 221110. This affects an unknown function of the file /cgi-bin/login.cgi of the component POST Request Handler. Executing a manipulation of the argument homepage/hostname/login_page can lead to cross site scripting. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

Wavlink WL-WN578W2: 221110

References

https://github.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_6/README.md
https://github.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_7/README.md
https://vuldb.com/?ctiid.352361
https://vuldb.com/?id.352361
https://vuldb.com/?submit.774692
https://vuldb.com/?submit.774693
https://vuldb.com/?submit.774696

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