vulnerability
Apache HTTPD: CVE-2021-44790: Out-of-bounds Write
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:L/Au:N/C:P/I:P/A:P) | Dec 20, 2021 | Jan 6, 2022 | Apr 9, 2026 |
Severity
7
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
Dec 20, 2021
Added
Jan 6, 2022
Modified
Apr 9, 2026
Description
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.
Solution
apache-httpd-upgrade-latest
References
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.