CVE-2026-51719 Missing authorization in n/a
Unauthenticated attackers can remove URL filtering rules on TOTOLINK T6 routers via a crafted POST request, bypassing security controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-51719?
CVE-2026-51719 is a high-severity missing authorization vulnerability in n/a, published on 31 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Incorrect access control in the delUrlFilterRules function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to remove URL filtering rules via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
Weakness: CWE-284
Which versions are affected by CVE-2026-51719?
How do I fix CVE-2026-51719?
No fix has been published for CVE-2026-51719 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-51719 being exploited?
There is no known exploitation of CVE-2026-51719 in the wild and no public exploit code.
Sources
Also known as GHSA-v6fp-cxm2-wrch.