{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-32883", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-16T21:03:44.421Z", "datePublished": "2026-03-30T20:36:30.579Z", "dateUpdated": "2026-04-02T14:10:02.578Z"}, "containers": {"cna": {"title": "Botan: Missing OCSP Response Signature Verification Allows MitM Certificate Revocation Bypass", "problemTypes": [{"descriptions": [{"cweId": "CWE-347", "lang": "en", "description": "CWE-347: Improper Verification of Cryptographic Signature", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/randombit/botan/security/advisories/GHSA-9j2j-hqmc-hf5x", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/randombit/botan/security/advisories/GHSA-9j2j-hqmc-hf5x"}], "affected": [{"vendor": "randombit", "product": "botan", "versions": [{"version": ">= 3.0.0, < 3.11.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-30T20:36:30.579Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-9j2j-hqmc-hf5x", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-02T14:09:48.050314Z", "id": "CVE-2026-32883", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-02T14:10:02.578Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-32883", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-02T14:09:48.050314Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-02T14:09:56.688Z"}}], "cna": {"title": "Botan: Missing OCSP Response Signature Verification Allows MitM Certificate Revocation Bypass", "source": {"advisory": "GHSA-9j2j-hqmc-hf5x", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "randombit", "product": "botan", "versions": [{"status": "affected", "version": ">= 3.0.0, < 3.11.0"}]}], "references": [{"url": "https://github.com/randombit/botan/security/advisories/GHSA-9j2j-hqmc-hf5x", "name": "https://github.com/randombit/botan/security/advisories/GHSA-9j2j-hqmc-hf5x", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-347", "description": "CWE-347: Improper Verification of Cryptographic Signature"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-30T20:36:30.579Z"}}}, "cveMetadata": {"cveId": "CVE-2026-32883", "state": "PUBLISHED", "dateUpdated": "2026-04-02T14:10:02.578Z", "dateReserved": "2026-03-16T21:03:44.421Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-03-30T20:36:30.579Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Botan es una biblioteca de criptograf\u00eda C++. Desde la versi\u00f3n 3.0.0 hasta antes de la versi\u00f3n 3.11.0, durante la validaci\u00f3n de ruta X509, las respuestas OCSP se verificaban en busca de un c\u00f3digo de estado apropiado, pero omitieron cr\u00edticamente verificar la firma de la propia respuesta OCSP. Este problema ha sido parcheado en la versi\u00f3n 3.11.0."}], "id": "CVE-2026-32883", "lastModified": "2026-04-01T14:24:02.583", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-03-30T21:17:09.933", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/randombit/botan/security/advisories/GHSA-9j2j-hqmc-hf5x"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{"bugzilla": {"description": "Botan: Botan: Compromised certificate validation integrity via unverified OCSP response signatures", "id": "2453204", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453204"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N", "status": "draft"}, "cwe": "CWE-347", "details": ["A flaw was found in Botan. A remote attacker could exploit a vulnerability in the X509 path validation process where the signature of Online Certificate Status Protocol (OCSP) responses was not verified. This omission allows an attacker to provide forged OCSP responses, potentially leading to the acceptance of revoked certificates and compromising the integrity of the certificate validation."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-32883", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "rust-sequoia-sq", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "rust-sequoia-sqv", "product_name": "Red Hat Enterprise Linux 10"}], "public_date": "2026-03-30T20:36:30Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-32883\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-32883\nhttps://github.com/randombit/botan/security/advisories/GHSA-9j2j-hqmc-hf5x"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.0.0,3.11.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "botan", "source": "cna", "vendor": "randombit"}, "product": "botan", "vendor": "randombit"}], "analysis": {"en": {"generated_at": "2026-03-31T06:00:13.792722+00:00", "value": {"mitigation_remediation": ["Upgrade Botan to version 3.11.0 or later"], "summary": {"action": "Apply Patch", "impact": "Certificate Revocation Bypass"}, "threat_synthesis": {"affected_systems": "The flaw is present in randombit\u2019s Botan library, affecting all releases from version 3.0.0 through the last release before 3.11.0. Versions 3.11.0 and later include a patch that reinstates proper signature verification.", "description_and_impact": "This vulnerability stems from Botan\u2019s omission of signature verification on OCSP responses during X509 path validation. As a result, a malicious actor can supply a forged OCSP response that the library accepts, allowing a man\u2011in\u2011the\u2011middle attack to bypass certificate revocation checks. The consequence is that a client may trust a revoked or compromised certificate, potentially enabling disclosure, tampering, or impersonation over TLS connections.", "risk_and_exploitability": "The CVSS score of 5.9 indicates moderate severity. Exploitation requires that the attacker can supply a rogue OCSP response, usually by being in a position to influence the client\u2019s certificate validation, such as a compromised or malicious relay. There is no EPSS metric available, and the vulnerability is not listed in the CISA KEV catalog, suggesting it has not been widely leveraged yet. Nevertheless, any environment where certificate revocation is critical should treat this as a real risk."}}}}, "created": "2026-03-31T19:59:51.648232+00:00", "updated": "2026-03-31T20:40:04.937908+00:00", "vendors": ["randombit", "randombit$PRODUCT$botan"]}