Meta Proxygen QuicWtSession::closeSession Access closeSession (v2026.042026.09)
CVE-2026-84895 Published on September 28, 2026
In proxygen from v2026.04.06.00 until v2026.09.28.00, QuicWtSession::closeSession accesses its member fields after calling the base QuicWtSessionBase::closeSession method. The base method notifies the session handler, which may release the last reference to the session and destroy it.
Vulnerability Analysis
CVE-2026-84895 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be low. considered to have a small impact on confidentiality and integrity and availability.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-84895 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-84895
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Affected Versions
Facebook proxygen:- Version v2026.04.06.00 and below v2026.09.28.00 is affected.