CVE-2026-32884 | randombit botan up to 3.10.x X.509 Certificate certificate validation (GHSA-7c3g-7763-ggj5)

VDB-354284 · CVE-2026-32884 · GHSA-7C3G-7763-GGJ5 RANDOMBIT BOTAN UP TO 3.10.X X.509 CERTIFICATE CERTIFICATE VALIDATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.7 $0-$5k 1.89+ Summaryinfo A vulnerability classified as critical was found in randombit botan up to 3.10.x. The impacted element is an unknown function of the component X.509 Certificate Handler. Such manipulation leads to certificate validation. This vulnerability is traded as CVE-2026-32884. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised. Detailsinfo A vulnerability was found in randombit botan up to 3.10.x. It has been rated as problematic. Affected by this issue is an unknown function of the component X.509 Certificate Handler. The manipulation with an unknown input leads to a certificate validation vulnerability. Using CWE to declare the problem leads to CWE-295. The product does not validate, or incorrectly validates, a certificate. Impacted is integrity. CVE summarizes: 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. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-32884 since 03/16/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1587.003. Upgrading to version 3.11.0 eliminates this vulnerability. Productinfo Vendor randombit Name botan Version 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 License open-source Website Product: https://github.com/randombit/botan/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.8 VulDB Meta Temp Score: 4.7 VulDB Base Score: 3.7 VulDB Temp Score: 3.6 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 5.9 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Certificate validation CWE: CWE-295 / CWE-287 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: botan 3.11.0 Timelineinfo 03/16/2026 CVE reserved 03/30/2026 +14 days VulDB entry created 03/31/2026 +0 days Advisory disclosed 03/31/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-7c3g-7763-ggj5 Status: Confirmed CVE: CVE-2026-32884 (🔒) GCVE (CVE): GCVE-0-2026-32884 GCVE (VulDB): GCVE-100-354284 Entryinfo Created: 03/31/2026 00:23 Changes: 03/31/2026 00:23 (66) Complete: 🔍 Cache ID: 99:1CE:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸