HIGH
ASP.NET: CORS not properly applied
Published Nov 15, 2017
8.7
HIGHCVSS 3.0
EPSS 10.48%
Description
ASP.NET Core 1.0, 1.1, and 2.0 allow an attacker to bypass Cross-origin Resource Sharing (CORS) configurations and retrieve normally restricted content from a web application, aka "ASP.NET Core Information Disclosure Vulnerability".
Affected products
-
- Version ASP.NET Core 1.0, 1.1, and 2.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Microsoft Corporation | ASP.NET Core | n/a |
|
OR
- 1.0
- 1.1
- 2.0
No data.
.NET Core 1.0 on Red Hat Enterprise Linux
rh-dotnetcore10-dotnetcore
Not affected
.NET Core 1.1 on Red Hat Enterprise Linux
rh-dotnetcore11-dotnetcore
Not affected
.NET Core 2.0 on Red Hat Enterprise Linux
rh-dotnet20-dotnet
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| .NET Core 1.0 on Red Hat Enterprise Linux | rh-dotnetcore10-dotnetcore | Not affected | n/a |
| .NET Core 1.1 on Red Hat Enterprise Linux | rh-dotnetcore11-dotnetcore | Not affected | n/a |
| .NET Core 2.0 on Red Hat Enterprise Linux | rh-dotnet20-dotnet | Not affected | n/a |
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.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
1 other source (Red Hat) ▾
8.7 HIGH Red Hat
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Changed
Confidentiality Impact High
Integrity Impact High
Availability Impact None
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
10.48% 0.10485
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.10485
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (35 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 10.48% (0.10485) | 95.63th | v5 (v2026.06.15) |
| Sep 22, 2026 | 10.48% (0.10485) | 95.55th | v5 (v2026.06.15) |
| Sep 21, 2026 | 9.31% (0.09311) | 95.21th | v5 (v2026.06.15) |
| Sep 6, 2026 | 10.48% (0.10485) | 95.45th | v5 (v2026.06.15) |
| Sep 5, 2026 | 9.31% (0.09311) | 95.10th | v5 (v2026.06.15) |
| Aug 30, 2026 | 10.48% (0.10485) | 95.42th | v5 (v2026.06.15) |
| Aug 28, 2026 | 9.31% (0.09311) | 95.08th | v5 (v2026.06.15) |
| Aug 24, 2026 | 10.48% (0.10485) | 95.39th | v5 (v2026.06.15) |
| Aug 23, 2026 | 9.31% (0.09311) | 95.06th | v5 (v2026.06.15) |
| Jun 15, 2026 | 10.48% (0.10485) | 95.16th | v5 (v2026.06.15) |
| Apr 14, 2026 | 7.53% (0.07533) | 91.83th | v4 (v2025.03.14) |
| Dec 17, 2025 | 10.71% (0.10707) | 93.06th | v4 (v2025.03.14) |
| Nov 21, 2025 | 26.62% (0.26621) | 96.13th | v4 (v2025.03.14) |
| Nov 18, 2025 | 7.53% (0.07533) | 90.90th | v4 (v2025.03.14) |
| Aug 7, 2025 | 26.62% (0.26621) | 96.12th | v4 (v2025.03.14) |
| May 3, 2025 | 22.27% (0.22270) | 95.46th | v4 (v2025.03.14) |
| Apr 5, 2025 | 24.89% (0.24895) | 95.70th | v4 (v2025.03.14) |
| Mar 30, 2025 | 20.43% (0.20427) | 95.07th | v4 (v2025.03.14) |
| Mar 29, 2025 | 61.87% (0.61870) | 97.64th | v4 (v2025.03.14) |
| Mar 19, 2025 | 20.43% (0.20427) | 94.84th | v4 (v2025.03.14) |
| Mar 17, 2025 | 24.34% (0.24340) | 95.63th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.93% (0.00928) | 83.66th | v3 (v2023.03.01) |
| Oct 25, 2023 | 0.93% (0.00928) | 81.22th | v3 (v2023.03.01) |
| Aug 30, 2023 | 1.31% (0.01311) | 84.25th | v3 (v2023.03.01) |
| May 17, 2023 | 1.56% (0.01557) | 85.27th | v3 (v2023.03.01) |
| Apr 7, 2023 | 1.48% (0.01477) | 84.78th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.65% (0.01653) | 85.61th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.42% (0.06416) | 91.03th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.42% (0.06416) | 90.14th | v2 (v2022.01.01) |
| Mar 7, 2022 | 6.42% (0.06416) | 78.33th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.85% (0.05853) | 77.42th | v2 (v2022.01.01) |
| Feb 3, 2022 | 9.25% (0.09255) | 86.70th | v1 |
| Jan 6, 2022 | 9.25% (0.09255) | 86.54th | v1 |
| Sep 1, 2021 | 9.25% (0.09255) | 93.94th | v1 |
| Apr 14, 2021 | 9.25% (0.09255) | 0.00th | v1 |
Weaknesses (0)
No CWE recorded.
References (10)
- http://www.securityfocus.com/bid/101712 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039793 vdb-entryx_refsource_SECTRACKIssue TrackingThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-8700 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1512998 Issue Tracking
- https://github.com/advisories/GHSA-3rp6-rjw4-cq39 Advisory
- https://github.com/aspnet/Announcements/issues/279
- https://github.com/github/advisory-database/issues/302
- https://nvd.nist.gov/vuln/detail/CVE-2017-8700
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8700 x_refsource_CONFIRMIssue TrackingPatchVendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-8700
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/101712 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1039793 | vdb-entryx_refsource_SECTRACKIssue TrackingThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2017-8700 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1512998 | Issue Tracking | |
| https://github.com/advisories/GHSA-3rp6-rjw4-cq39 | Advisory | |
| https://github.com/aspnet/Announcements/issues/279 | ||
| https://github.com/github/advisory-database/issues/302 | ||
| https://nvd.nist.gov/vuln/detail/CVE-2017-8700 | ||
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8700 | x_refsource_CONFIRMIssue TrackingPatchVendor Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2017-8700 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Nov 15, 2017
Updated Sep 16, 2024
Reserved May 3, 2017
Link CVE-2017-8700
CISA Vulnrichment
GHSA-3RP6-RJW4-CQ39 Updated n/a