{"id":"CVE-2021-44790","aliases":["BIT-apache-2021-44790"],"url":"https://o3.security/vulnerability/CVE-2021-44790","summary":null,"details":"A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the vulnerabilty though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and earlier.","published":"2021-12-20T12:15:07.440Z","modified":"2026-07-08T06:00:04.981296897Z","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":{"score":0.9684,"percentile":0.99885,"asOf":"2026-09-13"},"cisaKev":null,"exploitsKnown":3,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"http://httpd.apache.org/security/vulnerabilities_24.html"},{"type":"ADVISORY","url":"http://seclists.org/fulldisclosure/2022/May/33"},{"type":"ADVISORY","url":"http://seclists.org/fulldisclosure/2022/May/35"},{"type":"ADVISORY","url":"http://seclists.org/fulldisclosure/2022/May/38"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/12/20/4"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFSWOH4X77CV7AH7C4RMHUBDWKQDL4YH/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGWILBORT67SHMSLYSQZG2NMXGCMPUZO/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X73C35MMMZGBVPQQCH7LQZUMYZNQA5FO/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7H26WJ6TPKNWV3QKY4BHKUKQVUTZJTD/"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202208-20"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20211224-0001/"},{"type":"ADVISORY","url":"https://support.apple.com/kb/HT213255"},{"type":"ADVISORY","url":"https://support.apple.com/kb/HT213256"},{"type":"ADVISORY","url":"https://support.apple.com/kb/HT213257"},{"type":"ADVISORY","url":"https://www.debian.org/security/2022/dsa-5035"},{"type":"ADVISORY","url":"https://www.tenable.com/security/tns-2022-01"},{"type":"ADVISORY","url":"https://www.tenable.com/security/tns-2022-03"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpujan2022.html"},{"type":"EVIDENCE","url":"http://packetstormsecurity.com/files/171631/Apache-2.4.x-Buffer-Overflow.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T06:00:04.981296897Z"}}