CVE-2021-40438
Apache HTTP Server-Side Request Forgery (SSRF)
Summary
A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.
Affected software
Vendor: Apache · Product: Apache
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Apache
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2021-44228 | Apache Log4j2 Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2017-5638 | Apache Struts Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2013-2251 | Apache Struts Improper Input Validation Vulnerability | 100.0% | Yes |
| CVE-2021-41773 | Apache HTTP Server Path Traversal Vulnerability | 100.0% | Yes |
| CVE-2018-11776 | Apache Struts Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2017-12617 | Apache Tomcat Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2024-45195 | Apache OFBiz Forced Browsing Vulnerability | 100.0% | Yes |
| CVE-2021-45046 | Apache Log4j2 Deserialization of Untrusted Data Vulnerability | 100.0% | Yes |
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