CVE-2009-4086
CRLF injection vulnerability in Xerver HTTP Server 4.31 and 4.32 allows remote attackers to...
CRLF injection vulnerability in Xerver HTTP Server 4.31 and 4.32 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via certain byte sequences at the end of a URL. NOTE: some of these details are obtained from third party information.
Exploit likelihood
What each source reports
NVD Score used
CRLF injection vulnerability in Xerver HTTP Server 4.31 and 4.32 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via certain byte sequences at the end of a URL. NOTE: some of these details are obtained from third party information.
- Record
CVE-2009-4086- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
CRLF injection vulnerability in Xerver HTTP Server 4.31 and 4.32 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via certain byte sequences at the end of a URL. NOTE: some of these details are obtained from third party information.
- Record
CVE-2009-4086- Updated
- 2026-11-02
EUVDEUVD-2009-4057 No score
CRLF injection vulnerability in Xerver HTTP Server 4.31 and 4.32 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via certain byte sequences at the end of a URL. NOTE: some of these details are obtained from third party information.
- Record
EUVD-2009-4057- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2wh9-mjfj-9cc7 No score
CRLF injection vulnerability in Xerver HTTP Server 4.31 and 4.32 allows remote attackers to...
CRLF injection vulnerability in Xerver HTTP Server 4.31 and 4.32 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via certain byte sequences at the end of a URL. NOTE: some of these details are obtained from third party information.
- Record
GHSA-2wh9-mjfj-9cc7- Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Xerver 4.31/4.32 - HTTP Response Splitting | 2009-11-18 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-4086 is a medium vulnerability (CVSS 5.0) in Javascript Xerver Http Server, published November 27, 2009. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 4.76%, the 91st percentile. No source names a fixed version.