Apache HTTP Server Path Traversal Vulnerability

Critical Listed in CISA KEV

CVECVE-2021-42013

First seen2021-11-03 00:00 UTC

Disclosed2021-11-03 00:00 UTC

Last updated2026-07-18 02:00 UTC

Channel statuspending_review

Summary

Apache HTTP Server contains a path traversal vulnerability that allows an attacker to perform remote code execution if files outside directories configured by Alias-like directives are not under default require all denied or if CGI scripts are enabled. This CVE ID resolves an incomplete patch for CVE-2021-41773.

In-depth triage · Auto channel

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

Apache:HTTP Server

Sources

CISA KEV DATABASE

Original Links

https://nvd.nist.gov/vuln/detail/CVE-2021-42013 advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog kev

Timeline

2021-11-03 kev_added CISA KEV
2026-07-18 kev_ingest CISA KEV