{"cve":"CVE-2018-20820","nvd":{"published":"2019-04-23T14:29:00.367","modified":"2026-06-17T01:53:32.650","status":"Modified","description":"read_ujpg in jpgcoder.cc in Dropbox Lepton 1.2.1 allows attackers to cause a denial-of-service (application runtime crash because of an integer overflow) via a crafted file.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-190"],"references":["https://github.com/dropbox/lepton/commit/6a5ceefac1162783fffd9506a3de39c85c725761","https://github.com/dropbox/lepton/issues/111","https://github.com/dropbox/lepton/commit/6a5ceefac1162783fffd9506a3de39c85c725761","https://github.com/dropbox/lepton/issues/111"],"products":["dropbox:lepton"],"source":"nvd","synced_at":"2026-10-19T20:56:19.218283075+00:00"},"epss":{"cve":"CVE-2018-20820","score":0.00959,"percentile":0.61508,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}