Request Validation (aka the ValidateRequest filters) in ASP.NET in Microsoft .NET Framework without the MS07-040 update does not properly detect dangerous client input, which allows remote attackers to conduct cross-site scripting (XSS) attacks, as demonstrated by a query string containing a "</" (less-than slash) sequence
Published Aug 27, 2008
4.3
MEDIUMCVSS 2.0
EPSS 20.42%
Description
Request Validation (aka the ValidateRequest filters) in ASP.NET in Microsoft .NET Framework without the MS07-040 update does not properly detect dangerous client input, which allows remote attackers to conduct cross-site scripting (XSS) attacks, as demonstrated by a query string containing a "</" (less-than slash) sequence.
Affected products
No data.
Configuration 1
Running on/with
- 2003
- 2003
- 2003
- 2003
- 2003
- 2003
- xp
- xp
- n/a
- n/a
- n/a
- n/a
- 2.0
Configuration 2
Running on/with
- 2003
- 2003
- 2003
- 2003
- 2003
- 2003
- 2008
- 2008
- 2008
- xp
- xp
- n/a
- n/a
- n/a
- n/a
- 1.1
Configuration 3
Running on/with
- 2003
- 2003
- 2003
- 2003
- 2003
- 2003
- 2008
- xp
- xp
- xp
- xp
- n/a
- n/a
- n/a
- n/a
- 1.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 20.42% (0.20421) | 97.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 20.42% (0.20421) | 97.16th | v5 (v2026.06.15) |
| Dec 28, 2025 | 11.49% (0.11493) | 93.38th | v4 (v2025.03.14) |
| Dec 27, 2025 | 19.86% (0.19859) | 95.29th | v4 (v2025.03.14) |
| Oct 28, 2025 | 11.49% (0.11493) | 93.29th | v4 (v2025.03.14) |
| Oct 27, 2025 | 19.86% (0.19859) | 95.21th | v4 (v2025.03.14) |
| Oct 1, 2025 | 11.49% (0.11493) | 93.38th | v4 (v2025.03.14) |
| Mar 30, 2025 | 19.86% (0.19859) | 94.98th | v4 (v2025.03.14) |
| Mar 29, 2025 | 33.62% (0.33623) | 95.23th | v4 (v2025.03.14) |
| Mar 17, 2025 | 19.86% (0.19859) | 94.99th | v4 (v2025.03.14) |
| Mar 9, 2025 | 33.25% (0.33252) | 97.17th | v3 (v2023.03.01) |
| Jan 29, 2025 | 36.42% (0.36421) | 97.23th | v3 (v2023.03.01) |
| Dec 22, 2024 | 39.25% (0.39253) | 97.28th | v3 (v2023.03.01) |
| Dec 17, 2024 | 37.47% (0.37471) | 97.21th | v3 (v2023.03.01) |
| Dec 12, 2024 | 36.21% (0.36211) | 97.30th | v3 (v2023.03.01) |
| Oct 9, 2024 | 37.19% (0.37193) | 97.25th | v3 (v2023.03.01) |
| May 18, 2023 | 40.37% (0.40373) | 96.72th | v3 (v2023.03.01) |
| Mar 7, 2023 | 44.85% (0.44846) | 96.78th | v3 (v2023.03.01) |
| Mar 6, 2023 | 19.13% (0.19134) | 96.36th | v2 (v2022.01.01) |
| Apr 1, 2022 | 19.13% (0.19134) | 96.03th | v2 (v2022.01.01) |
| Feb 4, 2022 | 19.13% (0.19134) | 93.67th | v2 (v2022.01.01) |
References (4)
- http://securityreason.com/securityalert/4193 third-party-advisoryx_refsource_SREASONThird Party Advisory
- http://www.procheckup.com/PDFs/bypassing-dot-NET-ValidateRequest.pdf x_refsource_MISCBroken Link
- http://www.securityfocus.com/archive/1/495667/100/0/threaded mailing-listx_refsource_BUGTRAQ
- https://exchange.xforce.ibmcloud.com/vulnerabilities/44741 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://securityreason.com/securityalert/4193 | third-party-advisoryx_refsource_SREASONThird Party Advisory | |
| http://www.procheckup.com/PDFs/bypassing-dot-NET-ValidateRequest.pdf | x_refsource_MISCBroken Link | |
| http://www.securityfocus.com/archive/1/495667/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/44741 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.