{"id":"CVE-2018-1285","aliases":["GHSA-2cwj-8chv-9pp9"],"url":"https://o3.security/vulnerability/CVE-2018-1285","summary":"XML External Entity attack in log4net","details":"Apache log4net versions before 2.0.10 do not disable XML external entities when parsing log4net configuration files. This allows for XXE-based attacks in applications that accept attacker-controlled log4net configuration files.","published":"2020-05-11T17:15:10.923Z","modified":"2026-04-16T04:31:16.531652060Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"NuGet","name":"log4net","fixedVersion":"2.0.10"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/r7ab6b6e702f11a6f77b0db2af2d5e5532f56ae4b99b5fe73c5200b6a%40%3Cdev.logging.apache.org%3E"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M2U233HVAQDSZ2PRG4XSGDASLY3J6ALH/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VT2DNNSW7C7FNK3MA3SLEUHGW5USYZKE/"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r00b16ac5e0bbf7009a0d167ed58f3f94d0033b0f4b3e3d5025cc4872%40%3Cdev.logging.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r6543acafca3e2d24ff4b0c364a91540cb9378977ffa8d37a03ab4b0f%40%3Cdev.logging.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r9de86a185575e6c5f92e2a70a1d2e2e9514dc4341251577aac8e3866%40%3Cdev.logging.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r525cbbd7db0aef4a114cf60de8439aa285decc34904d42a7f14f39c3%40%3Cdev.logging.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rd2d72a017e238d1f345f9d14e075c81be16fc68a41c9e9ad9e29a732%40%3Cdev.logging.apache.org%3E"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKL2LPINAI6BCMXOH4V4HVHGLUXIWOFO/"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r33564de316d4e4ba0fea1d4d079e62cde1ffe64369c1157243d840d9%40%3Cdev.logging.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rdbac24c945ca5c69cd5348b5ac023bc625768f653335de146e09ae2d%40%3Cdev.logging.apache.org%3E"},{"type":"ADVISORY","url":"https://lists.apache.org/thread.html/reab1c277c95310bad1038255e0757857b2fbe291411b4fa84552028a%40%3Cdev.logging.apache.org%3E"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpuApr2021.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20220909-0001/"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpujan2021.html"},{"type":"REPORT","url":"https://issues.apache.org/jira/browse/LOG4NET-575"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-16T04:31:16.531652060Z"}}