CVE-2001-1556
The log files in Apache web server contain information directly supplied by clients and does not...
The log files in Apache web server contain information directly supplied by clients and does not filter or quote control characters, which could allow remote attackers to hide HTTP requests and spoof source IP addresses when logs are viewed with UNIX programs such as cat, tail, and grep.
Exploit likelihood
What each source reports
NVD Score used
The log files in Apache web server contain information directly supplied by clients and does not filter or quote control characters, which could allow remote attackers to hide HTTP requests and spoof source IP addresses when logs are viewed with UNIX programs such as cat, tail, and grep.
- Record
CVE-2001-1556- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-532
- Updated
- 2026-11-02
CVE List No score
The log files in Apache web server contain information directly supplied by clients and does not filter or quote control characters, which could allow remote attackers to hide HTTP requests and spoof source IP addresses when logs are viewed with UNIX programs such as cat, tail, and grep.
- Record
CVE-2001-1556- Updated
- 2026-11-02
EUVDEUVD-2001-1533 No score
The log files in Apache web server contain information directly supplied by clients and does not filter or quote control characters, which could allow remote attackers to hide HTTP requests and spoof source IP addresses when logs are viewed with UNIX programs such as cat, tail, and grep.
- Record
EUVD-2001-1533- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9f54-6r7j-3hph No score
The log files in Apache web server contain information directly supplied by clients and does not...
The log files in Apache web server contain information directly supplied by clients and does not filter or quote control characters, which could allow remote attackers to hide HTTP requests and spoof source IP addresses when logs are viewed with UNIX programs such as cat, tail, and grep.
- Record
GHSA-9f54-6r7j-3hph- Weakness
- CWE-532
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2001-1556 is a medium vulnerability (CVSS 5.0) in Apache Http Server, published December 31, 2001. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.56%, the 89th percentile. No source names a fixed version.