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CVE-2021-40438 Apache HTTP Server-Side Request Forgery (SSRF)
Active exploitation observed
· CISA KEV catalogue
Required action
Apply updates per vendor instructions.
Ransomware campaigns
Known to be used
Weakness
CWE-918
Description
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 products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Apache HTTP Server 2.4 | earliest → 2.4.48 | No fix stated |
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