{"url":"http://public2.vulnerablecode.io/api/packages/1028115?format=json","purl":"pkg:pypi/aws-encryption-sdk@4.0.0","type":"pypi","namespace":"","name":"aws-encryption-sdk","version":"4.0.0","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"4.0.5","latest_non_vulnerable_version":"4.0.5","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/75280?format=json","vulnerability_id":"VCID-ysae-xz84-vqhq","summary":"Cryptographic algorithm downgrade in the caching layer of Amazon AWS Encryption SDK for Python before version 3.3.1 and before version  4.0.5 might allow an authenticated local threat actor to bypass key commitment policy enforcement via a shared key cache, resulting in ciphertext that can be decrypted to multiple different plaintexts.\n\nTo remediate this issue, users should upgrade to version 3.3.1, 4.0.5 or above.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-6550","reference_id":"","reference_type":"","scores":[{"value":"5e-05","scoring_system":"epss","scoring_elements":"0.00282","published_at":"2026-06-14T12:55:00Z"},{"value":"5e-05","scoring_system":"epss","scoring_elements":"0.00281","published_at":"2026-06-13T12:55:00Z"},{"value":"5e-05","scoring_system":"epss","scoring_elements":"0.0028","published_at":"2026-06-12T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-6550"},{"reference_url":"https://aws.amazon.com/security/security-bulletins/2026-017-aws","reference_id":"","reference_type":"","scores":[{"value":"4.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"},{"value":"5.7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://aws.amazon.com/security/security-bulletins/2026-017-aws"},{"reference_url":"https://github.com/aws/aws-encryption-sdk-python","reference_id":"","reference_type":"","scores":[{"value":"4.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"},{"value":"5.7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/aws/aws-encryption-sdk-python"},{"reference_url":"https://github.com/google/security-research/security/advisories/GHSA-wqgp-vphw-hphf","reference_id":"","reference_type":"","scores":[{"value":"4.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"},{"value":"5.7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/google/security-research/security/advisories/GHSA-wqgp-vphw-hphf"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6550","reference_id":"","reference_type":"","scores":[{"value":"4.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"},{"value":"5.7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6550"},{"reference_url":"https://aws.amazon.com/security/security-bulletins/2026-017-aws/","reference_id":"2026-017-aws","reference_type":"","scores":[{"value":"4.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"},{"value":"5.7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-04-20T19:44:04Z/"}],"url":"https://aws.amazon.com/security/security-bulletins/2026-017-aws/"},{"reference_url":"https://github.com/advisories/GHSA-v638-38fc-rhfv","reference_id":"GHSA-v638-38fc-rhfv","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-v638-38fc-rhfv"},{"reference_url":"https://github.com/aws/aws-encryption-sdk-python/security/advisories/GHSA-v638-38fc-rhfv","reference_id":"GHSA-v638-38fc-rhfv","reference_type":"","scores":[{"value":"4.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"},{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"5.7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-04-20T19:44:04Z/"}],"url":"https://github.com/aws/aws-encryption-sdk-python/security/advisories/GHSA-v638-38fc-rhfv"},{"reference_url":"https://github.com/aws/aws-encryption-sdk-python/releases/tag/v3.3.1","reference_id":"v3.3.1","reference_type":"","scores":[{"value":"4.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"},{"value":"5.7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-04-20T19:44:04Z/"}],"url":"https://github.com/aws/aws-encryption-sdk-python/releases/tag/v3.3.1"},{"reference_url":"https://github.com/aws/aws-encryption-sdk-python/releases/tag/v4.0.5","reference_id":"v4.0.5","reference_type":"","scores":[{"value":"4.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"},{"value":"5.7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-04-20T19:44:04Z/"}],"url":"https://github.com/aws/aws-encryption-sdk-python/releases/tag/v4.0.5"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/373397?format=json","purl":"pkg:pypi/aws-encryption-sdk@4.0.5","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:pypi/aws-encryption-sdk@4.0.5"}],"aliases":["CVE-2026-6550","GHSA-v638-38fc-rhfv"],"risk_score":3.1,"exploitability":"0.5","weighted_severity":"6.2","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-ysae-xz84-vqhq"}],"fixing_vulnerabilities":[],"risk_score":"3.1","resource_url":"http://public2.vulnerablecode.io/packages/pkg:pypi/aws-encryption-sdk@4.0.0"}