CVE-2026-34582
- Source
- https://cve.org/CVERecord?id=CVE-2026-34582
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34582.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-34582
- Aliases
-
- GHSA-pxcj-9ppx-g86g
- Downstream
- Related
- Published
- 2026-04-07T21:13:49.281Z
- Modified
- 2026-07-16T03:30:57.279597429Z
- Severity
-
- 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Botan has a TLS 1.3 certificate authentication bypass
- Details
-
Botan is a C++ cryptography library. Prior to version 3.11.1, the TLS 1.3 implementation allowed ApplicationData records to be processed prior to the Finished message being received. A server which is attempting to enforce client authentication via certificates can by bypassed by a client which entirely omits Certificate, CertificateVerify, and the Finished message and instead sends application data records. This vulnerability is fixed in 3.11.1.
- Database specific
{ "cwe_ids": [ "CWE-841" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34582.json", "cna_assigner": "GitHub_M" }- References
-
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34582.json
- https://access.redhat.com/security/cve/CVE-2026-34582
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34582.json
- https://github.com/randombit/botan/security/advisories/GHSA-pxcj-9ppx-g86g
- https://nvd.nist.gov/vuln/detail/CVE-2026-34582
- https://bugzilla.redhat.com/show_bug.cgi?id=2456285
Affected packages
Git / github.com/randombit/botan
Affected ranges
- Type
- GIT
- Repo
- https://github.com/randombit/botan
- Events
- Database specific
{ "cpe": "cpe:2.3:a:botan_project:botan:*:*:*:*:*:*:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "3.11.1" }, { "introduced": "3.0.0" }, { "last_affected": "3.11.0" } ], "source": [ "AFFECTED_FIELD", "CPE_RANGE" ] }