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Vulnerability record · CVE-2012-3382 · published 12 July 2012

CVE-2012-3382: Mono cross-site scripting vulnerability

Mono · Mono

Cross-site scripting (XSS) vulnerability in the ProcessRequest function in mcs/class/System.Web/System.Web/HttpForbiddenHandler.cs in Mono 2.10.8 and earlier allows remote attackers to inject arbitrary web script or HTML via a file with a crafted name and a forbidden extension, which is not properly handled in an error message.

4.3 CVSS 2.0 Medium EPSS 1.9% · top 20.9% CWE-79 · Cross-site scripting
4.3CVSS 2.0 base score
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

Cross-site scripting (XSS) vulnerability in the ProcessRequest function in mcs/class/System.Web/System.Web/HttpForbiddenHandler.cs in Mono 2.10.8 and earlier allows remote attackers to inject arbitrary web script or HTML via a file with a crafted name and a forbidden extension, which is not properly handled in an error message.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.mandriva.com/security/advisories?name=MDVSA-2012:140
http://www.openwall.com/lists/oss-security/2012/07/06/11
https://bugzilla.novell.com/show_bug.cgi?id=769799
https://github.com/mono/mono/commit/d16d4623edb210635bec3ca3786481b82cde25a2 ExploitPatch
https://hermes.opensuse.org/messages/15374367
http://www.mandriva.com/security/advisories?name=MDVSA-2012:140
http://www.openwall.com/lists/oss-security/2012/07/06/11
https://bugzilla.novell.com/show_bug.cgi?id=769799
https://github.com/mono/mono/commit/d16d4623edb210635bec3ca3786481b82cde25a2 ExploitPatch
https://hermes.opensuse.org/messages/15374367

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2012-3382), CISA KEV, FIRST EPSS (scores of 2026-10-03). This page is refreshed as NVD updates the record.