{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-69249", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-03T19:54:19.852Z", "datePublished": "2026-08-03T21:26:45.826Z", "dateUpdated": "2026-08-03T21:26:45.826Z"}, "containers": {"cna": {"title": "python-cryptography: Duplicate self-signed intermediates can cause exponential path-building", "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "lang": "en", "description": "CWE-400: Uncontrolled Resource Consumption", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/pyca/cryptography/security/advisories/GHSA-jwv3-5hgf-82ww", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/pyca/cryptography/security/advisories/GHSA-jwv3-5hgf-82ww"}, {"name": "https://github.com/pyca/cryptography/pull/14960", "tags": ["x_refsource_MISC"], "url": "https://github.com/pyca/cryptography/pull/14960"}, {"name": "https://github.com/pyca/cryptography/commit/4a12cf49675a184e47f912b00b04f3a629283582", "tags": ["x_refsource_MISC"], "url": "https://github.com/pyca/cryptography/commit/4a12cf49675a184e47f912b00b04f3a629283582"}], "affected": [{"vendor": "pyca", "product": "cryptography", "versions": [{"version": "< 49.0.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-03T21:26:45.826Z"}, "descriptions": [{"lang": "en", "value": "python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 49.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents unbounded recursion and guarantees termination, an attacker-controlled certificate chain can lead the processing to easily take more than 5s to reject in testing. This amplification could form the basis for a resource exhaustion denial of service attack. The core issue arises in the recursive nature of build_chain_inner, which does not de-duplicate against previously analyzed candidates. As the correctness of validation is not affected, the integrity of a system cannot be compromised through this vector, only its availability. This issue is fixed in 49.0.0."}], "source": {"advisory": "GHSA-jwv3-5hgf-82ww", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,49.0.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "cryptography", "source": "cna", "vendor": "pyca"}, "product": "cryptography", "vendor": "pyca"}], "created": "2026-08-03T22:30:02.779435+00:00", "updated": "2026-08-03T22:30:02.779467+00:00", "vendors": ["pyca", "pyca$PRODUCT$cryptography"]}