CVE-2026-5507CWE-502

Session Cache Restore — Arbitrary Free via Deserialized Pointer

Medium · published April 9, 2026

CVSS v4.0
4.1
EPSS
0%
Percentile
14.0
In the wild
Unconfirmed
What it is

When restoring a session from cache, a pointer from the serialized session data is used in a free operation without validation. An attacker who can poison the session cache could trigger an arbitrary free. Exploitation requires the ability to inject a crafted session into the cache and for the application to call specific session restore APIs.

The record
Technical detail
CVSS v4.0
4.1 · MEDIUM
Vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00238 · 14.0th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-04-09T22:18Z
EPSS history
Timeline
  • 09 APR 22:18Z
    Session Cache Restore — Arbitrary Free via Deserialized Pointer
    cvelistv5