CVE-2026-64829
Question2Answer 1.8.8 Session Fixation via Forgot-Password Flow
- State
- Published
- Severity
- 9.1 Critical
- Published
- Jul 22, 2026
- Updated
- Aug 7, 2026
- Reserved
- Jul 20, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.1 Critical | 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 | VulnCheck |
| 3.1 | 7.4 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-613 Insufficient Session Expiration
Affected Products
| Product | Versions |
|---|---|
question2answerq2a |
|
References
- Pull Requestissue-trackingpatch
- https://www.vulncheck.com/advisories/question2answer-session-fixation-via-forgot-password-flowthird-party-advisory
- http://seclists.org/fulldisclosure/2026/Aug/32
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