Session Fixation in WeGIA - CVE-2026-55682
Published: July 7, 2026
Vulnerability identifier: #VU136985
CSH Severity: High
CVSS v4: 8.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-55682
CWE-ID: CWE-384
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to fixate a victim's session and disclose sensitive information.
The vulnerability exists due to session fixation in html/seguranca/sessionStart.php when handling requests with a user-controlled PHPSESSID cookie. A remote attacker can supply a crafted PHPSESSID cookie value to fixate a victim's session and disclose sensitive information.
User interaction is required because the victim must authenticate after the attacker-controlled session identifier is set.
Affected software
WeGIA
How to mitigate CVE-2026-55682
Install security update from vendor's website.
WeGIA - update to 3.8.6