CVE-2026-66745 Artica Proxy 4.50 Session Fixation via fw.login.php
Unauthenticated attackers can hijack administrative sessions by pre-setting a known session ID, gaining full control of the Artica Proxy interface.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-66745?
CVE-2026-66745 is a high-severity vulnerability in ArticaTech Artica Proxy, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Artica Proxy before 4.50.000000 Service Pack 7 (fixed in hotfix 20260724-02) contains a session fixation vulnerability that allows unauthenticated attackers to hijack administrative sessions by setting a known PHPSESSID on a victim's browser prior to authentication. Attackers can pre-set a controlled session identifier and wait for a victim to authenticate through fw.login.php, after which the attacker gains a fully authenticated administrative session on port 9000.
Weakness: CWE-94
Which versions are affected by CVE-2026-66745?
How do I fix CVE-2026-66745?
No fix has been published for CVE-2026-66745 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-66745 being exploited?
There is no known exploitation of CVE-2026-66745 in the wild and no public exploit code.
Sources
Also known as GHSA-48r5-qhcj-7g87.