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.
Published: 2026-04-09
Score: 4.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Memory corruption from an arbitrary free
Action: Apply Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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History

Wed, 29 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 4.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H'}


Tue, 14 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 10 Apr 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Wolfssl
Wolfssl wolfssl
Vendors & Products Wolfssl
Wolfssl wolfssl

Thu, 09 Apr 2026 22:30:00 +0000

Type Values Removed Values Added
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.
Title Session Cache Restore — Arbitrary Free via Deserialized Pointer
Weaknesses CWE-502
References
Metrics cvssV4_0

{'score': 4.1, '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: wolfSSL

Published:

Updated: 2026-04-14T14:38:40.362Z

Reserved: 2026-04-03T16:40:00.883Z

Link: CVE-2026-5507

cve-icon Vulnrichment

Updated: 2026-04-14T14:38:34.533Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-09T23:17:01.543

Modified: 2026-04-29T14:05:22.370

Link: CVE-2026-5507

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-10T09:27:37Z

Weaknesses