CVE-2026-5507

MEDIUM

Session Cache Restore — Arbitrary Free via Deserialized Pointer

Title source: cna
STIX 2.1

Description

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.

References (1)

Core 1

Scores

CVSS v3 4.0
EPSS 0.0017
EPSS Percentile 6.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-502
Status published
Products (2)
wolfSSL/wolfSSL < 5.9.0
wolfssl/wolfssl < 5.9.0
Published Apr 09, 2026
Tracked Since Apr 10, 2026