{"id":"CVE-2026-53914","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-53914","summary":"JetBrains Kotlin: Unsafe Deserialization in Kotlin Build Cache Enables Code Execution","details":"In JetBrains Kotlin before 2.4.20 code execution was possible via unsafe deserialization in the build cache metadata","published":"2026-06-26T15:32:13Z","modified":"2026-08-12T19:30:12.246087401Z","cvss":{"score":6.7,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L"},"epss":{"score":0.00196,"percentile":0.0952,"asOf":"2026-08-12"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.jetbrains.kotlin:kotlin-gradle-plugin","fixedVersion":"2.4.20-Beta1"}],"fix":{"url":"https://github.com/JetBrains/kotlin/commit/bf51df665b458fda7c3eaf436c4d88dc119d7ec6","label":"JetBrains/kotlin@bf51df6"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53914"},{"type":"WEB","url":"https://github.com/JetBrains/kotlin/commit/bf51df665b458fda7c3eaf436c4d88dc119d7ec6"},{"type":"PACKAGE","url":"https://github.com/JetBrains/kotlin"},{"type":"WEB","url":"https://github.com/JetBrains/kotlin/releases/tag/v2.4.20-Beta1"},{"type":"WEB","url":"https://www.jetbrains.com/privacy-security/issues-fixed"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T19:30:12.246087401Z"}}