CVE-2026-56154
9.8 CRITICALPublished 2026-10-01 · Updated 2026-10-05
AI risk analysis
- Summary
- A Use After Free vulnerability in mod_rewrite of Apache HTTP Server allows attackers to execute arbitrary code by manipulating lookahead patterns, leading to a critical security risk.
- Exploitability
- Exploitation is complex and requires specific conditions, including the use of lookahead patterns in mod_rewrite. Precondition is the presence of vulnerable mod_rewrite configuration.
- Blast radius
- If exploited, this vulnerability could lead to complete system compromise, allowing attackers to execute arbitrary code on the server.
- Detection
- No reliable host or network indicator is derivable from the published description.
- Prioritized remediation
- Upgrade to Apache HTTP Server 2.4.69 or later.
rcewebapachemod_rewrite
Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.
NVD description
Use After Free vulnerability in Apache HTTP Server's mod_rewrite when using lookahead (%{LA-U:HTTP:...}) This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-416
Vendors
apache
Products
http server
All references
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
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