CVE-2026-32884

Name
CVE-2026-32884
Description
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.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security-advisories@github.com https://github.com/randombit/botan/security/advisories/GHSA-7c3g-7763-ggj5

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:botan_project:botan:*:*:*:*:*:*:*:* botan >= None < 3.11.0

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
botan3 edge-main 3.11.0-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
botan edge-main 2.19.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
botan edge-main 2.19.4-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
botan edge-main 2.18.1-r4 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
botan edge-main 2.18.1-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
botan edge-main 2.17.3-r0 None possibly vulnerable
botan edge-main 2.9.0-r0 None possibly vulnerable
botan edge-main 2.7.0-r0 None possibly vulnerable
botan edge-main 2.6.0-r0 None possibly vulnerable
botan edge-main 2.5.0-r0 None possibly vulnerable
botan 3.21-main 2.19.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
botan 3.21-main 2.19.4-r0 None possibly vulnerable
botan 3.21-main 2.18.1-r3 None possibly vulnerable
botan 3.21-main 2.17.3-r0 None possibly vulnerable
botan 3.21-main 2.9.0-r0 None possibly vulnerable
botan 3.21-main 2.7.0-r0 None possibly vulnerable
botan 3.21-main 2.6.0-r0 None possibly vulnerable
botan 3.21-main 2.5.0-r0 None possibly vulnerable
botan 3.20-main 2.19.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
botan 3.20-main 2.19.4-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
botan 3.20-main 2.18.1-r3 None possibly vulnerable
botan 3.20-main 2.17.3-r0 None possibly vulnerable
botan 3.20-main 2.9.0-r0 None possibly vulnerable
botan 3.20-main 2.7.0-r0 None possibly vulnerable
botan 3.20-main 2.6.0-r0 None possibly vulnerable
botan 3.20-main 2.5.0-r0 None possibly vulnerable
botan 3.19-main 2.19.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
botan 3.19-main 2.18.1-r3 None possibly vulnerable
botan 3.19-main 2.17.3-r0 None possibly vulnerable
botan 3.19-main 2.9.0-r0 None possibly vulnerable
botan 3.19-main 2.7.0-r0 None possibly vulnerable
botan 3.19-main 2.6.0-r0 None possibly vulnerable
botan 3.19-main 2.5.0-r0 None possibly vulnerable