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CVE-2008-3906

CRLF injection vulnerability in Sys.Web in Mono 2.0 and earlier allows remote attackers to inject...

4.3 MediumPublic exploitFix available

CRLF injection vulnerability in Sys.Web in Mono 2.0 and earlier allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the query string.

Exploit likelihood

7.10%Down 5.5 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 4.3

CRLF injection vulnerability in Sys.Web in Mono 2.0 and earlier allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the query string.

Record
CVE-2008-3906
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness
CWE-20
Updated
2026-11-02
CVE List No score

CRLF injection vulnerability in Sys.Web in Mono 2.0 and earlier allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the query string.

Record
CVE-2008-3906
Updated
2026-11-02
EUVDEUVD-2008-3892 No score

CRLF injection vulnerability in Sys.Web in Mono 2.0 and earlier allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the query string.

Record
EUVD-2008-3892
Updated
2026-11-03
GitHub AdvisoriesGHSA-fwxc-72gp-54jq No score

CRLF injection vulnerability in Sys.Web in Mono 2.0 and earlier allows remote attackers to inject...

CRLF injection vulnerability in Sys.Web in Mono 2.0 and earlier allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the query string.

Record
GHSA-fwxc-72gp-54jq
Weakness
CWE-20
Updated
2026-11-02
OSV No score

CRLF injection vulnerability in Sys.Web in Mono 2.0 and earlier allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the query string.

Record
CVE-2008-3906
Updated
2026-11-02
OSVDEBIAN-CVE-2008-3906 No score

CRLF injection vulnerability in Sys.Web in Mono 2.0 and earlier allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the query string.

Record
DEBIAN-CVE-2008-3906
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mono
Debian:12
before 1.9.1+dfsg-4
1.9.1+dfsg-4
mono
Debian:13
before 1.9.1+dfsg-4
1.9.1+dfsg-4
mono
Debian:14
before 1.9.1+dfsg-4
1.9.1+dfsg-4

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBMono 2.0 - 'System.Web' HTTP Header Injection2008-08-20

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2008-3906 is a medium vulnerability (CVSS 4.3) in Mono, published September 4, 2008. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 7.10%, the 94th percentile. Fixed in mono 1.9.1+dfsg-4.

References

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