CVE-2008-3906

Mono vulnerability

CVSS

4.3

EPSS

7.1%

EPSS pct

94th

Exploited

No known

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.

Affected vendor

Mono

Affected product

Mono

CVSS vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Weakness type (CWE)

CWE-20 — Improper Input Validation

Published

2008-09-04

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to partial impact to integrity.

Its EPSS score of 7.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 94% of all scored CVEs.

Check your external exposure to CVE-2008-3906

Confirm whether Mono Mono is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2008-3906.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2008-3906

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