The setRequestHeader method of the XMLHttpRequest object in Microsoft Internet Explorer 5.01, 6, and 7 does not block dangerous HTTP request headers when certain 8-bit character sequences are appended to a header name, which allows remote attackers to (1) conduct HTTP request splitting and HTTP request smuggling attacks via an incorrect Content-Length header, (2) access arbitrary virtual hosts via a modified Host header, (3) bypass referrer restrictions via an incorrect Referer header, and (4) bypass the same-origin policy and obtain sensitive information via a crafted request header
Published Mar 28, 2008
7.1
HIGHCVSS 2.0
EPSS 26.32%
Description
The setRequestHeader method of the XMLHttpRequest object in Microsoft Internet Explorer 5.01, 6, and 7 does not block dangerous HTTP request headers when certain 8-bit character sequences are appended to a header name, which allows remote attackers to (1) conduct HTTP request splitting and HTTP request smuggling attacks via an incorrect Content-Length header, (2) access arbitrary virtual hosts via a modified Host header, (3) bypass referrer restrictions via an incorrect Referer header, and (4) bypass the same-origin policy and obtain sensitive information via a crafted request header.
Affected products
No data.
Configuration 1
- 5.01
- 6
Running on/with
- n/a
Configuration 2
- 6
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
Configuration 3
- 7
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
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:C/I:N/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 1, 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 (29 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 26.32% (0.26317) | 97.95th | v5 (v2026.06.15) |
| Jun 15, 2026 | 26.32% (0.26317) | 97.73th | v5 (v2026.06.15) |
| Dec 28, 2025 | 51.21% (0.51206) | 97.76th | v4 (v2025.03.14) |
| Dec 27, 2025 | 50.19% (0.50192) | 97.74th | v4 (v2025.03.14) |
| Oct 28, 2025 | 51.21% (0.51206) | 97.72th | v4 (v2025.03.14) |
| Oct 27, 2025 | 50.19% (0.50192) | 97.69th | v4 (v2025.03.14) |
| Oct 1, 2025 | 51.21% (0.51206) | 97.80th | v4 (v2025.03.14) |
| Mar 30, 2025 | 50.19% (0.50192) | 97.60th | v4 (v2025.03.14) |
| Mar 29, 2025 | 61.31% (0.61309) | 97.60th | v4 (v2025.03.14) |
| Mar 17, 2025 | 50.19% (0.50192) | 97.56th | v4 (v2025.03.14) |
| Mar 9, 2025 | 55.56% (0.55557) | 97.87th | v3 (v2023.03.01) |
| Jan 30, 2025 | 80.33% (0.80331) | 98.58th | v3 (v2023.03.01) |
| Dec 17, 2024 | 78.25% (0.78253) | 98.46th | v3 (v2023.03.01) |
| Dec 12, 2024 | 95.33% (0.95327) | 99.44th | v3 (v2023.03.01) |
| Jun 17, 2024 | 95.60% (0.95596) | 99.41th | v3 (v2023.03.01) |
| Apr 3, 2024 | 94.84% (0.94837) | 99.24th | v3 (v2023.03.01) |
| Jan 23, 2024 | 95.54% (0.95544) | 99.26th | v3 (v2023.03.01) |
| Dec 18, 2023 | 95.24% (0.95242) | 99.17th | v3 (v2023.03.01) |
| Dec 8, 2023 | 95.71% (0.95713) | 99.26th | v3 (v2023.03.01) |
| Nov 12, 2023 | 95.84% (0.95837) | 99.28th | v3 (v2023.03.01) |
| Oct 7, 2023 | 95.43% (0.95432) | 99.14th | v3 (v2023.03.01) |
| Sep 1, 2023 | 95.06% (0.95065) | 99.02th | v3 (v2023.03.01) |
| Jun 22, 2023 | 95.57% (0.95573) | 99.08th | v3 (v2023.03.01) |
| May 18, 2023 | 95.71% (0.95711) | 99.08th | v3 (v2023.03.01) |
| Apr 11, 2023 | 95.57% (0.95569) | 98.99th | v3 (v2023.03.01) |
| Mar 7, 2023 | 95.79% (0.95793) | 99.01th | v3 (v2023.03.01) |
| Mar 6, 2023 | 23.04% (0.23038) | 96.67th | v2 (v2022.01.01) |
| Jul 17, 2022 | 23.04% (0.23038) | 96.60th | v2 (v2022.01.01) |
| Feb 4, 2022 | 23.04% (0.23038) | 94.54th | v2 (v2022.01.01) |
References (12)
- http://marc.info/?l=bugtraq&m=121380194923597&w=2 vendor-advisoryx_refsource_HP
- http://secunia.com/advisories/29453 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://securityreason.com/securityalert/3785 third-party-advisoryx_refsource_SREASON
- http://www.mindedsecurity.com/MSA02240108.html x_refsource_MISC
- http://www.securityfocus.com/archive/1/489954/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/28379 vdb-entryx_refsource_BIDPatch
- http://www.securitytracker.com/id?1020226 vdb-entryx_refsource_SECTRACK
- http://www.us-cert.gov/cas/techalerts/TA08-162B.html third-party-advisoryx_refsource_CERTUS Government Resource
- http://www.vupen.com/english/advisories/2008/0980 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2008/1778 vdb-entryx_refsource_VUPENVendor Advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2008/ms08-031 vendor-advisoryx_refsource_MS
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5291 vdb-entrysignaturex_refsource_OVAL
Change history (0)
No recorded changes yet.