CVE-2026-33591 Authentication bypass on WaptServer
Remote unauthenticated attackers can bypass security restrictions to retrieve valid session tokens, leading to account takeover in WAPT Server.
- 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-2026-33591?
CVE-2026-33591 is a critical authentication bypass vulnerability in Tranquil IT Systems WAPT Server, published on 3 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in Wapt Server before version 2.6.1.17813 allows a remote unauthenticated attacker to bypass security restriction using a specially crafted packet and retrieve a valid session token for the targeted account.
Weakness: CWE-288
Which versions are affected by CVE-2026-33591?
How do I fix CVE-2026-33591?
No fix has been published for CVE-2026-33591 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-33591 being exploited?
There is no known exploitation of CVE-2026-33591 in the wild and no public exploit code.
Sources
Also known as GHSA-jj6f-hxj9-r997.