{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44983","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-08T16:23:33.264Z","datePublished":"2026-05-26T21:38:13.753Z","dateUpdated":"2026-05-27T12:45:15.497Z"},"containers":{"cna":{"title":"smallbitvec: Safe API Triggered Heap Buffer Overflow via Integer Overflow","problemTypes":[{"descriptions":[{"cweId":"CWE-122","lang":"en","description":"CWE-122: Heap-based Buffer Overflow","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-190","lang":"en","description":"CWE-190: Integer Overflow or Wraparound","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/servo/smallbitvec/security/advisories/GHSA-97wc-2hqc-cjgr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/servo/smallbitvec/security/advisories/GHSA-97wc-2hqc-cjgr"}],"affected":[{"vendor":"servo","product":"smallbitvec","versions":[{"version":">= 1.0.1, < 2.6.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-26T21:38:13.753Z"},"descriptions":[{"lang":"en","value":"smallbitvec is a growable bit-vector for Rust, optimized for size. From 1.0.1 to 2.6.0, an integer overflow in the internal capacity calculation of smallbitvec can lead to an undersized heap allocation, resulting in a heap buffer overflow through safe APIs only. This allows memory corruption without requiring unsafe code from the caller. This vulnerability is fixed in 2.6.1."}],"source":{"advisory":"GHSA-97wc-2hqc-cjgr","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/servo/smallbitvec/security/advisories/GHSA-97wc-2hqc-cjgr","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-27T12:45:06.921929Z","id":"CVE-2026-44983","options":[{"Exploitation":"poc"},{"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":"2026-05-27T12:45:15.497Z"}}]}}