CVE-2026-32884 in randombit botan

要約 (英語)

Botan is a C++ cryptography library. Prior to version 3.11.0, during processing of an X.509 certificate path using name constraints which restrict the set of allowable DNS names, if no subject alternative name is defined in the end-entity certificate Botan would check that the CN was allowed by the DNS name constraints, even though this check is technically not required by RFC 5280. However this check failed to account for the possibility of a mixed-case CN. Thus a certificate with CN=Sub.EVIL.COM and no subject alternative name would bypasses an excludedSubtrees constraint for evil.com because the comparison is case-sensitive. This issue has been patched in version 3.11.0.

責任者

GitHub_M

予約する

2026年03月16日

公開

2026年03月31日

エントリ

VulDB provides additional information and datapoints for this CVE:

識別子	脆弱性	CWE	悪用可	対策	CVE
354284	randombit botan X.509 Certificate 弱い認証	295	未定義	公式な修正	CVE-2026-32884