{"cve":"CVE-2020-29582","nvd":{"published":"2021-02-03T16:15:13.727","modified":"2026-06-17T03:11:28.820","status":"Analyzed","description":"In JetBrains Kotlin before 1.4.21, a vulnerable Java API was used for temporary file and folder creation. An attacker was able to read data from such files and list directories due to insecure permissions.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-276"],"references":["https://blog.jetbrains.com","https://blog.jetbrains.com/blog/2021/02/03/jetbrains-security-bulletin-q4-2020/","https://lists.apache.org/thread.html/r2721aba31a8562639c4b937150897e24f78f747cdbda8641c0f659fe%40%3Cusers.kafka.apache.org%3E","https://www.oracle.com//security-alerts/cpujul2021.html","https://www.oracle.com/security-alerts/cpuapr2022.html"],"products":["jetbrains:kotlin","oracle:communications_cloud_native_core_network_slice_selection_function","oracle:communications_cloud_native_core_policy","oracle:communications_cloud_native_core_service_communication_proxy"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2020-29582","score":0.02604,"percentile":0.85373,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-cqj8-47ch-rvvq","url":"https://osv.dev/vulnerability/GHSA-cqj8-47ch-rvvq","summary":"Incorrect Default Permissions in JetBrains Kotlin","modified":"2026-09-10T03:49:38.478412191Z","packages":[{"ecosystem":"Maven","name":"org.jetbrains.kotlin:kotlin-stdlib","purl":"pkg:maven/org.jetbrains.kotlin/kotlin-stdlib","ranges":["<1.4.21"],"fixed":["1.4.21"]}]}],"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."]}