Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since December 1, 2021.
CVE-2021-40438
Apache HTTP Server-Side Request Forgery (SSRF) vulnerability
Added to KEV December 1, 2021
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2021-40438
- CWE
- CWE-918
- Affected products
- Apache · Apache Apache
What happened
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.
What it means for your business
Apache Apache is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2021-40438). 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. CISA remediation due date: 2021-12-15. If you need help checking exposure, call (864) 335-9223.
Required action
Apply updates per vendor instructions.
CISA due date: December 15, 2021
Sources
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