CVE-2021-40438

CRITICAL9.0

CISA KEV

Published 2021-09-16 · Updated 2026-08-06 · Source security@apache.org

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.

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

CWE-918CWE-918

CISA Known-Exploited Vulnerability

Product: Apache — Apache

Name: Apache HTTP Server-Side Request Forgery (SSRF)

Date added: 2021-12-01 · Due: 2021-12-15

USED IN RANSOMWARE

Required action: Apply updates per vendor instructions.

References

View on NVD

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