CVE-2026-54399
Apache HttpComponents Core: Unbounded HTTP Header/Line Length in Default Configuration
- State
- Published
- Severity
- 7.5 High
- Published
- Jul 1, 2026
- Updated
- Jul 1, 2026
- Reserved
- Jun 13, 2026
Description
Uncontrolled Resource Consumption vulnerability in the HTTP/1.1 message parser in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending messages with excessive number of headers / excessive header length
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
- CWE-400 Uncontrolled Resource Consumption
Affected Products
| Product | Versions |
|---|---|
Apache HttpComponents CoreApache Software Foundation |
|
References
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