Cloudanix VulnDB

CVE-2026-5500

Medium · 5.9

CVSS

5.9

EPSS

0.5%

Published

Apr 10, 2026

CISA due date

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The record

wolfSSL's wc_PKCS7_DecodeAuthEnvelopedData() does not properly sanitize the AES-GCM authentication tag length received and has no lower bounds check. A man-in-the-middle can therefore truncate the mac field from 16 bytes to 1 byte, reducing the tag check from 2⁻¹²⁸ to 2⁻⁸.

Affected packages

Ecosystem Package Introduced Fixed

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