CVE-2026-64829 CRITICAL

CVE-2026-64829: Question2Answer 1.8.8 Session Fixation via Forgot-Password Flow

Vendor Q2A
Product question2answer
Weakness CWE-613 · Insufficient session expiration
Published July 22, 2026
Last update July 24, 2026

CVSS base score

9.1/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

Question2Answer through 1.8.8 contains a session invalidation vulnerability that allows attackers with a previously obtained remember-me cookie to retain authenticated access by exploiting the forgot-password reset flow's failure to clear the sessioncode field in qa-include/app/users-edit.php. While the normal password-change flow in qa-include/pages/account.php explicitly clears the sessioncode to invalidate persistent qa_session cookies, the forgot-password handler qa_finish_reset_user() omits this step, allowing any valid persistent cookie issued before the reset to continue authenticating the account after the password reset completes.

Key dates

02Disclosure timeline

July 22, 2026 CVE published
July 24, 2026 Record updated