Vulnerability · Published Jul 28, 2026 · Assigned by VulnCheck

CVE-2026-66745Artica Proxy 4.50 Session Fixation via fw.login.php

High 7.5

In plain English

A high-severity code injection in Artica Proxy from ArticaTech. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.6%top 53.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
ArticaTech	Artica Proxy	0 – through 4.50.000000 Service Pack 64.50.000000

Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Release Notes release-notes
Download Page patch
https://www.vulncheck.com/advisories/artica-proxy-session-fixation-via-fw-login-php third-party-advisory