{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-3663","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","state":"PUBLISHED","assignerShortName":"VulDB","dateReserved":"2026-03-06T20:34:39.952Z","datePublished":"2026-03-07T14:32:09.897Z","dateUpdated":"2026-03-11T16:29:23.238Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB","dateUpdated":"2026-03-07T14:32:09.897Z"},"title":"xlnt-community xlnt XLSX File compound_document.cpp xsgetn out-of-bounds","problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-125","lang":"en","description":"Out-of-Bounds Read"}]},{"descriptions":[{"type":"CWE","cweId":"CWE-119","lang":"en","description":"Memory Corruption"}]}],"affected":[{"vendor":"xlnt-community","product":"xlnt","versions":[{"version":"1.6.0","status":"affected"},{"version":"1.6.1","status":"affected"}],"modules":["XLSX File Parser"]}],"descriptions":[{"lang":"en","value":"A vulnerability was found in xlnt-community xlnt up to 1.6.1. This issue affects the function xlnt::detail::compound_document_istreambuf::xsgetn of the file source/detail/cryptography/compound_document.cpp of the component XLSX File Parser. Performing a manipulation results in out-of-bounds read. The attack is only possible with local access. The exploit has been made public and could be used. The patch is named 147. It is recommended to apply a patch to fix this issue."}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":4.8,"vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":3.3,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","baseSeverity":"LOW"}},{"cvssV3_0":{"version":"3.0","baseScore":3.3,"vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","baseSeverity":"LOW"}},{"cvssV2_0":{"version":"2.0","baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C"}}],"timeline":[{"time":"2026-03-06T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-03-06T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-03-06T21:39:52.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Oneafter (VulDB User)","type":"reporter"}],"references":[{"url":"https://vuldb.com/?id.349552","name":"VDB-349552 | xlnt-community xlnt XLSX File compound_document.cpp xsgetn out-of-bounds","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.349552","name":"VDB-349552 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.764644","name":"Submit #764644 | xlnt-community xlnt commit bceb706 and before Heap-based Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/xlnt-community/xlnt/issues/139","tags":["issue-tracking"]},{"url":"https://github.com/oneafter/0128/blob/main/xl3/repro","tags":["exploit"]},{"url":"https://github.com/xlnt-community/xlnt/pull/147","tags":["issue-tracking","patch"]},{"url":"https://github.com/xlnt-community/xlnt/","tags":["product"]}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-11T16:15:09.537284Z","id":"CVE-2026-3663","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":"2026-03-11T16:29:23.238Z"}}]}}