CVE-2026-5504
Medium · 5.3CVSS
5.3
EPSS
0.1%
Published
Apr 9, 2026
CISA due date
—
The record
A padding oracle exists in wolfSSL's PKCS7 CBC decryption that could allow an attacker to recover plaintext through repeated decryption queries with modified ciphertext. In previous versions of wolfSSL the interior padding bytes are not validated.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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