CVE-2026-32883

CVE-2026-32883 affects the Botan C++ cryptography library. From version 3.0.0 through before 3.11.0, during X509 path validation, OCSP responses were checked for a valid status but the OCSP response signature itself was not verified, enabling a potential Man‑in‑the‑Middle in certificate revocatio...

CVE-2026-32883 Botan: Missing OCSP Response Signature Verification Allows MitM Certificate Revocation Bypass

Botan is a C++ cryptography library. From version 3.0.0 to before version 3.11.0, during X509 path validation, OCSP responses were checked for an appropriate status code, but critically omitted verifying the signature of the OCSP response itself. This issue has been patched in version 3.11.0...

CVE-2026-32883

Botan is a C++ cryptography library. From version 3.0.0 to before version 3.11.0, during X509 path validation, OCSP responses were checked for an appropriate status code, but critically omitted verifying the signature of the OCSP response itself. This issue has been patched in version 3.11.0...

CVE-2026-32883 Botan: Missing OCSP Response Signature Verification Allows MitM Certificate Revocation Bypass

Botan is a C++ cryptography library. From version 3.0.0 to before version 3.11.0, during X509 path validation, OCSP responses were checked for an appropriate status code, but critically omitted verifying the signature of the OCSP response itself. This issue has been patched in version 3.11.0...

CVE-2026-32883

Botan is a C++ cryptography library. From version 3.0.0 to before version 3.11.0, during X509 path validation, OCSP responses were checked for an appropriate status code, but critically omitted verifying the signature of the OCSP response itself. This issue has been patched in version 3.11.0...

CVE-2026-32884

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 t...

EUVD-2026-17212

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 t...

CVE-2026-32884

CVE-2026-32884 — Botan (C++ crypto library) : Prior to version 3.11.0, during X.509 name constraints processing, Botan could mis-handle a mixed-case common name (CN) when no subject alternative name (SAN) is present. The CN check against DNS name constraints was effectively case-sensitive, allowi...

CVE-2026-32884 Botan: Case-Insensitive CN Values Bypass DNS excludedSubtrees Name Constraints (RFC 5280 Violation)

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 t...

CVE-2026-32884 Botan: Case-Insensitive CN Values Bypass DNS excludedSubtrees Name Constraints (RFC 5280 Violation)

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 t...

CVE-2026-32884: Improper Certificate Validation

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 t...

Botan 信任管理问题漏洞

Botan is a C++ encryption library developed by Jack Lloyd as an individual project. Versions of Botan prior to 3.11.0 had a trust management vulnerability. This vulnerability stemmed from improper checks of mixed-case common names when processing X.509 certificate paths, which could lead to...

CVE-2026-32877: Out-of-bounds Read

Botan is a C++ cryptography library. From version 2.3.0 to before version 3.11.0, during SM2 decryption, the code that checked the authentication code value C3 failed to check that the encoded value was of the expected length prior to comparison. An invalid ciphertext can cause a heap over-read o...

PT-2026-29125

Name of the Vulnerable Software and Affected Versions Botan versions 3.0.0 through 3.10.9 Description Botan is a C++ cryptography library. During X509 path validation, versions prior to 3.11.0 did not verify the signature of Online Certificate Status Protocol OCSP responses, only checking for an...

Botan 数据伪造问题漏洞

Botan is a C++ encryption library developed by Jack Lloyd as an individual project. Versions of Botan from 3.0.0 to 3.11.0 had a data manipulation vulnerability, which stemmed from the lack of signature verification for OCSP responses during the X509 path validation process...

CVE-2026-32883: Improper Verification of Cryptographic Signature

Botan is a C++ cryptography library. From version 3.0.0 to before version 3.11.0, during X509 path validation, OCSP responses were checked for an appropriate status code, but critically omitted verifying the signature of the OCSP response itself. This issue has been patched in version 3.11.0...

PT-2026-29124

Name of the Vulnerable Software and Affected Versions Botan versions 2.3.0 through 3.10.9 Description Botan is a C++ cryptography library. During SM2 decryption, the code that checks the authentication code value C3 does not verify the encoded value's length before comparison. This can lead to a...

Botan 缓冲区错误漏洞

Botan is a C++ encryption library developed by Jack Lloyd as an individual project. Versions of Botan from 2.3.0 to 3.11.0 contained a buffer error vulnerability. This vulnerability stemmed from the failure to check the expected length of the authentication code value during the SM2 decryption...

Fedora 43 : qownnotes (2026-00a6b7589c)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-00a6b7589c advisory. See commit history ---- Automatic update for qownnotes-26.1.7-2.fc43. Changelog for qownnotes Fri Jan 16 2026 Artem Polishchuk - 26.1.7-2 - Mask BR:...

Astra Linux – Vulnerability in Botan

Botan is a C++ cryptography library. X.509 certificates can identify elliptic curves using either an object identifier or by explicitly encoding the parameters. A bug in the parsing of name constraint extensions in X.509 certificates meant that if the extension included both permitted and exclude...