CVE-2026-66745

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.

CVSS 4.0

7.5CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.6% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-25)

CWE

CWE-94

Published

2026-07-28

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

References

• https://wiki.articatech.com/maintenance/upgrade-artica/hotfix-450000000
• https://www.articatech.com/hotfixes.php?main=4.50.000000&sp=7
• https://www.vulncheck.com/advisories/artica-proxy-session-fixation-via-fw-login-php

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