DEBIAN-CVE-2021-40438

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2021-40438
Published: 16 Sept 2021, 15:15
Last modified:28 Apr 2026, 20:22

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9 CRITICAL
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

16 Sept 2021, 15:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:22
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•CRITICAL•Score: 9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected Systems

  • debian•apache2

    < 2.4.51-1~deb11u1 | < 2.4.49-1 | < 2.4.49-1 | < 2.4.49-1

References (1)