{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-17578", "assignerOrgId": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb", "state": "PUBLISHED", "assignerShortName": "Kong", "dateReserved": "2026-07-27T15:40:25.996Z", "datePublished": "2026-08-05T10:20:55.471Z", "dateUpdated": "2026-08-05T13:07:23.408Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "02762ae7-200e-4b20-9b2b-a77d5b8fc4cb", "shortName": "Kong", "dateUpdated": "2026-08-05T10:20:55.471Z"}, "title": "Kong Event Gateway AES-GCM nonce reuse due to missing key rotation enforcement", "datePublic": "2026-08-05T17:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-323", "description": "CWE-323: Reusing a Nonce, Key Pair in Encryption", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-97", "descriptions": [{"lang": "en", "value": "CAPEC-97 Cryptanalysis"}]}], "affected": [{"vendor": "Kong", "product": "Kong Event Gateway", "collectionURL": "https://hub.docker.com/r/kong/kong-event-gateway", "packageName": "kong-event-gateway", "versions": [{"status": "affected", "version": "1.0.0", "lessThan": "1.1.2", "versionType": "semver"}, {"status": "affected", "version": "1.2.0", "lessThan": "1.2.1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Kong Event Gateway versions 1.0.0 through 1.1.1 and 1.2.0 do not enforce key rotation before reaching NIST SP 800-38D recommended usage limit for AES-GCM encryption keys with random nonces when the AWS IAM encryption feature is enabled.\n\n\n\nIf a producer sends messages at a sustained high rate without key rotation, which only occurs on reboot of the Kong Event Gateway instance, the probability of a nonce collision becomes non-negligible. An authorized consumer who detects a nonce collision can recover parts of plaintext from the affected messages.\n\n\n\nNew versions 1.1.2 and 1.2.1 enforce automatic key rotation before the recommended usage limit is reached.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Kong Event Gateway versions 1.0.0 through 1.1.1 and 1.2.0 do not enforce key rotation before reaching NIST SP 800-38D recommended usage limit for AES-GCM encryption keys with random nonces when the AWS IAM encryption feature is enabled.</p><p>If a producer sends messages at a sustained high rate without key rotation, which only occurs on reboot of the Kong Event Gateway instance, the probability of a nonce collision becomes non-negligible. An authorized consumer who detects a nonce collision can recover parts of plaintext from the affected messages.</p><p>New versions 1.1.2 and 1.2.1 enforce automatic key rotation before the recommended usage limit is reached.</p>"}]}], "references": [{"url": "https://developer.konghq.com/event-gateway/changelog/", "tags": ["release-notes"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "subConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NO", "Recovery": "USER", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "AMBER", "version": "4.0", "baseSeverity": "LOW", "baseScore": 2.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/AU:N/R:U/U:Amber"}}], "solutions": [{"lang": "en", "value": "Upgrade Kong Event Gateway to version 1.1.2 (for the 1.1.x branch or 1.0.x which is no longer supported) or 1.2.1 (for the 1.2.x branch). These versions enforce automatic key rotation before the NIST-recommended usage limit is reached.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Upgrade Kong Event Gateway to version 1.1.2 (for the 1.1.x branch or 1.0.x which is no longer supported) or 1.2.1 (for the 1.2.x branch). These versions enforce automatic key rotation before the NIST-recommended usage limit is reached.</p>"}]}], "source": {"discovery": "INTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.4"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-05T13:07:06.628504Z", "id": "CVE-2026-17578", "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": "2026-08-05T13:07:23.408Z"}}]}}

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