{"id":"CVE-2026-2703","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-2703","generatedAt":"2026-10-28T03:25:08.557Z","title":"A weakness has been identified in xlnt-community xlnt up to 1.6.1.","description":"A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::decode_base64 of the file source/detail/cryptography/base64.cpp of the component Encrypted XLSX File Parser. Executing a manipulation can lead to off-by-one. The attack requires local access. The exploit has been made available to the public and could be used for attacks. This patch is called f2d7bf494e5c52706843cf7eb9892821bffb0734. Applying a patch is advised to resolve this issue.","published":"2026-02-19T07:17:49.000Z","lastModified":"2026-06-17T10:31:34.000Z","status":"Analyzed","sourceIdentifier":"cna@vuldb.com","cvss":{"version":"4.0","score":1.9,"severity":"LOW","vector":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-189","CWE-193"],"affected":["xlnt-community/xlnt"],"epss":{"score":0.00236,"percentile":0.14444,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/oneafter/0128/blob/main/xl1/repro","tags":["Exploit"],"source":"cna@vuldb.com"},{"url":"https://github.com/xlnt-community/xlnt/","tags":["Product"],"source":"cna@vuldb.com"},{"url":"https://github.com/xlnt-community/xlnt/commit/f2d7bf494e5c52706843cf7eb9892821bffb0734","tags":["Patch"],"source":"cna@vuldb.com"},{"url":"https://github.com/xlnt-community/xlnt/issues/137","tags":["Exploit","Issue Tracking","Vendor Advisory"],"source":"cna@vuldb.com"},{"url":"https://vuldb.com/?ctiid.346649","tags":["Permissions Required","VDB Entry"],"source":"cna@vuldb.com"},{"url":"https://vuldb.com/?id.346649","tags":["Third Party Advisory","VDB Entry"],"source":"cna@vuldb.com"},{"url":"https://vuldb.com/?submit.754377","tags":["Third Party Advisory","VDB Entry"],"source":"cna@vuldb.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-2703","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}