{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-7768", "assignerOrgId": "ce714d77-add3-4f53-aff5-83d477b104bb", "state": "PUBLISHED", "assignerShortName": "openjs", "dateReserved": "2026-05-04T11:50:02.918Z", "datePublished": "2026-05-04T19:14:36.828Z", "dateUpdated": "2026-05-04T19:50:16.465Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "ce714d77-add3-4f53-aff5-83d477b104bb", "shortName": "openjs", "dateUpdated": "2026-05-04T19:14:36.828Z"}, "descriptions": [{"lang": "en", "value": "@fastify/accepts-serializer cached serializer-selection results keyed by the request Accept header without a size limit or eviction policy. A remote unauthenticated client could send many distinct but matching Accept header variants to make the cache grow unbounded, eventually exhausting the Node.js heap and crashing the process. Versions <= 6.0.3 are affected. Update to 6.0.4 or later, which bounds the cache via an LRU with a default size of 100 entries, configurable through the new cacheSize plugin option.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "@fastify/accepts-serializer cached serializer-selection results keyed by the request Accept header without a size limit or eviction policy. A remote unauthenticated client could send many distinct but matching Accept header variants to make the cache grow unbounded, eventually exhausting the Node.js heap and crashing the process. Versions <= 6.0.3 are affected. Update to 6.0.4 or later, which bounds the cache via an LRU with a default size of 100 entries, configurable through the new cacheSize plugin option."}]}], "affected": [{"vendor": "@fastify/accepts-serializer", "product": "@fastify/accepts-serializer", "defaultStatus": "unaffected", "versions": [{"versionType": "semver", "status": "affected", "version": "0", "lessThan": "6.0.4"}, {"versionType": "semver", "status": "unaffected", "version": "6.0.4"}], "packageURL": "pkg:npm/@fastify/accepts-serializer"}], "references": [{"url": "https://cna.openjsf.org/security-advisories.html"}, {"url": "https://github.com/fastify/fastify-accepts-serializer/security/advisories/GHSA-qxhc-wx3p-2wmg"}], "credits": [{"lang": "en", "type": "finder", "value": "Yuki Matsuhashi"}, {"lang": "en", "type": "remediation reviewer", "value": "Ulises Gasc\u00f3n"}, {"lang": "en", "type": "remediation developer", "value": "Manuel Spigolon"}], "title": "@fastify/accepts-serializer vulnerable to Denial of Service via Unbounded Accept Header Cache Growth", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-770", "lang": "en", "description": "CWE-770: Allocation of Resources Without Limits or Throttling", "type": "CWE"}]}], "x_generator": {"engine": "cve-kit 1.0.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-04T19:50:08.458813Z", "id": "CVE-2026-7768", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"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": "2026-05-04T19:50:16.465Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-7768", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-04T19:50:08.458813Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-04T19:50:12.504Z"}}], "cna": {"title": "@fastify/accepts-serializer vulnerable to Denial of Service via Unbounded Accept Header Cache Growth", "credits": [{"lang": "en", "type": "finder", "value": "Yuki Matsuhashi"}, {"lang": "en", "type": "remediation reviewer", "value": "Ulises Gasc\u00f3n"}, {"lang": "en", "type": "remediation developer", "value": "Manuel Spigolon"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 7.5, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "@fastify/accepts-serializer", "product": "@fastify/accepts-serializer", "versions": [{"status": "affected", "version": "0", "lessThan": "6.0.4", "versionType": "semver"}, {"status": "unaffected", "version": "6.0.4", "versionType": "semver"}], "packageURL": "pkg:npm/@fastify/accepts-serializer", "defaultStatus": "unaffected"}], "references": [{"url": "https://cna.openjsf.org/security-advisories.html"}, {"url": "https://github.com/fastify/fastify-accepts-serializer/security/advisories/GHSA-qxhc-wx3p-2wmg"}], "x_generator": {"engine": "cve-kit 1.0.0"}, "descriptions": [{"lang": "en", "value": "@fastify/accepts-serializer cached serializer-selection results keyed by the request Accept header without a size limit or eviction policy. A remote unauthenticated client could send many distinct but matching Accept header variants to make the cache grow unbounded, eventually exhausting the Node.js heap and crashing the process. Versions <= 6.0.3 are affected. Update to 6.0.4 or later, which bounds the cache via an LRU with a default size of 100 entries, configurable through the new cacheSize plugin option.", "supportingMedia": [{"type": "text/html", "value": "@fastify/accepts-serializer cached serializer-selection results keyed by the request Accept header without a size limit or eviction policy. A remote unauthenticated client could send many distinct but matching Accept header variants to make the cache grow unbounded, eventually exhausting the Node.js heap and crashing the process. Versions <= 6.0.3 are affected. Update to 6.0.4 or later, which bounds the cache via an LRU with a default size of 100 entries, configurable through the new cacheSize plugin option.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-770", "description": "CWE-770: Allocation of Resources Without Limits or Throttling"}]}], "providerMetadata": {"orgId": "ce714d77-add3-4f53-aff5-83d477b104bb", "shortName": "openjs", "dateUpdated": "2026-05-04T19:14:36.828Z"}}}, "cveMetadata": {"cveId": "CVE-2026-7768", "state": "PUBLISHED", "dateUpdated": "2026-05-04T19:50:16.465Z", "dateReserved": "2026-05-04T11:50:02.918Z", "assignerOrgId": "ce714d77-add3-4f53-aff5-83d477b104bb", "datePublished": "2026-05-04T19:14:36.828Z", "assignerShortName": "openjs"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "@fastify/accepts-serializer cached serializer-selection results keyed by the request Accept header without a size limit or eviction policy. A remote unauthenticated client could send many distinct but matching Accept header variants to make the cache grow unbounded, eventually exhausting the Node.js heap and crashing the process. Versions <= 6.0.3 are affected. Update to 6.0.4 or later, which bounds the cache via an LRU with a default size of 100 entries, configurable through the new cacheSize plugin option."}], "id": "CVE-2026-7768", "lastModified": "2026-05-04T20:16:21.107", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "ce714d77-add3-4f53-aff5-83d477b104bb", "type": "Secondary"}]}, "published": "2026-05-04T20:16:21.107", "references": [{"source": "ce714d77-add3-4f53-aff5-83d477b104bb", "url": "https://cna.openjsf.org/security-advisories.html"}, {"source": "ce714d77-add3-4f53-aff5-83d477b104bb", "url": "https://github.com/fastify/fastify-accepts-serializer/security/advisories/GHSA-qxhc-wx3p-2wmg"}], "sourceIdentifier": "ce714d77-add3-4f53-aff5-83d477b104bb", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "ce714d77-add3-4f53-aff5-83d477b104bb", "type": "Secondary"}]}

{}

{"created": "2026-05-04T20:30:08.152860+00:00", "updated": "2026-05-04T20:30:08.152871+00:00", "vendors": []}