CVE-2012-0007

The Microsoft Anti-Cross Site Scripting (AntiXSS) Library 3.x and 4.0 does not properly evaluate...

4.3 MediumPublic exploit

The Microsoft Anti-Cross Site Scripting (AntiXSS) Library 3.x and 4.0 does not properly evaluate characters after the detection of a Cascading Style Sheets (CSS) escaped character, which allows remote attackers to conduct cross-site scripting (XSS) attacks via HTML input, aka "AntiXSS Library Bypass Vulnerability."

Exploit likelihood

18.6%Down 20.5 points since Feb 4, 2022

What each source reports

NVD Score used 4.3

Record: CVE-2012-0007
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE List No score

Record: CVE-2012-0007
Updated: 2026-11-02

EUVDEUVD-2012-0048 No score

Record: EUVD-2012-0048
Updated: 2026-11-03

GitHub AdvisoriesGHSA-fgq2-gmxg-w62w No score

The Microsoft Anti-Cross Site Scripting (AntiXSS) Library 3.x and 4.0 does not properly evaluate...

Record: GHSA-fgq2-gmxg-w62w
Weakness: CWE-79
Updated: 2026-11-02

Affected products

microsoft anti-cross site scripting library

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Microsoft AntiXSS 3/4.0 Library Sanitization Module - Security Bypass	2012-01-10

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD

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

In short

CVE-2012-0007 is a medium vulnerability (CVSS 4.3) in Microsoft Anti-cross Site Scripting Library, published January 10, 2012. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 18.6%, the 97th percentile. No source names a fixed version.