Missing anchor in generated regex for rack-cors before 0.4.1 allows a malicious third-party site to perform CORS requests
Published Jul 13, 2017
8.8
HIGHCVSS 3.1
EPSS 2.34%
Description
Missing anchor in generated regex for rack-cors before 0.4.1 allows a malicious third-party site to perform CORS requests. If the configuration were intended to allow only the trusted example.com domain name and not the malicious example.net domain name, then example.com.example.net (as well as example.com-example.net) would be inadvertently allowed.
Affected products
No data.
Configuration 1
- < 0.4.1
Configuration 2
- 9.0
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
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
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 (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.34% (0.02345) | 83.03th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.34% (0.02345) | 81.38th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.75% (0.01750) | 80.88th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.57% (0.03568) | 79.29th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.30% (0.00304) | 69.98th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.30% (0.00304) | 68.87th | v3 (v2023.03.01) |
| May 8, 2023 | 0.30% (0.00304) | 65.11th | v3 (v2023.03.01) |
| Apr 27, 2023 | 0.25% (0.00253) | 61.59th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.36% (0.00359) | 67.74th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.04% (0.01040) | 28.32th | v1 |
| Jan 6, 2022 | 1.04% (0.01040) | 27.69th | v1 |
| Sep 1, 2021 | 1.04% (0.01040) | 64.49th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
No CWE recorded.
References (6)
- http://seclists.org/fulldisclosure/2017/Jul/22 x_refsource_MISCMailing ListThird Party Advisory
- http://www.debian.org/security/2017/dsa-3931 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://github.com/advisories/GHSA-2j9c-9vmv-7m39 Advisory
- https://github.com/cyu/rack-cors/commit/42ebe6caa8e85ffa9c8a171bda668ba1acc7a5e6 x_refsource_MISCPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-11173
- https://packetstormsecurity.com/files/143345/rack-cors-Missing-Anchor.html x_refsource_MISCThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://seclists.org/fulldisclosure/2017/Jul/22 | x_refsource_MISCMailing ListThird Party Advisory | |
| http://www.debian.org/security/2017/dsa-3931 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| https://github.com/advisories/GHSA-2j9c-9vmv-7m39 | Advisory | |
| https://github.com/cyu/rack-cors/commit/42ebe6caa8e85ffa9c8a171bda668ba1acc7a5e6 | x_refsource_MISCPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-11173 | ||
| https://packetstormsecurity.com/files/143345/rack-cors-Missing-Anchor.html | x_refsource_MISCThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.