What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-22 · updated 2026-10-24
• Weakness: CWE-613

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.

Affected products

• q2a question2answer: through 1.8.8

References

• https://github.com/q2a/question2answer/pull/1017
• https://www.vulncheck.com/advisories/question2answer-session-fixation-via-forgot-password-flow
• http://seclists.org/fulldisclosure/2026/Aug/32

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