Session fixation owasp. OWASP is a nonprofit foundation that works to improve the security of software. Session fixation on the main website for The OWASP Foundation. Feb 10, 2026 · See the OWASP Session Fixation page for specific examples of how this attack works. Summary Session Fixation may be possible. Session fixation on the main website for The OWASP Foundation. Introduction Session fixation attacks attempt to exploit the vulnerability of a system which allows one person to fixate (set) another person's session ID. Discover what to know about session fixation, including what it is, how it relates to application security, and answers to common questions. Dec 17, 2025 · What Is Session Fixation? Session fixation is a security flaw where an attacker sets or locks a session identifier before a user logs in. . In other words, session fixation is an attack that allows an attacker to predetermine the session token value used by a victim.
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