CVE-2026-4544 Wavlink WL-WN578W2 POST Request login.cgi cross site scripting
Remote attackers can inject malicious scripts via the login page, potentially leading to session hijacking or code execution on Wavlink WL-WN578W2 routers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-4544?
CVE-2026-4544 is a medium-severity cross-site scripting vulnerability in Wavlink WL-WN578W2, published on 22 Mar 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official 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.
Which versions are affected by CVE-2026-4544?
It affects 1 product.
Products include Wavlink Wl-Wn578w2 Firmware.
How do I fix CVE-2026-4544?
No fix has been published for CVE-2026-4544 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-4544 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4544 exists.
Other vulnerabilities in Wavlink WL-WN578W2
- CVE-2025-10358 Wavlink WL-WN578W2 wireless.cgi sub_404850 os command injection
- CVE-2025-10359 Wavlink WL-WN578W2 wireless.cgi sub_404DBC os command injection
- CVE-2025-10321 Wavlink WL-WN578W2 live_online.shtml information disclosure
- CVE-2025-10322 Wavlink WL-WN578W2 sysinit.html password recovery
- CVE-2025-10323 Wavlink WL-WN578W2 wizard_rep.shtml sub_409184 command injection
Sources
Also known as GHSA-jg8g-rwpf-2m3j.