rubygem-em-http-request: missing SSL hostname validation allows MITM
Published May 25, 2020
7.4
HIGHCVSS 3.1
EPSS 0.91%
Description
EM-HTTP-Request 1.1.5 uses the library eventmachine in an insecure way that allows an attacker to perform a man-in-the-middle attack against users of the library. The hostname in a TLS server certificate is not verified.
Affected products
No data.
Configuration 1
- 1.1.5
Configuration 2
- 32
- 33
No data.
Red Hat OpenStack Platform 13.0 Operational Tools for RHEL 7
rubygem-em-http-request-0:1.1.5-4.el7ost
Fixed · RHSA-2021:0937
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat OpenStack Platform 13.0 Operational Tools for RHEL 7 | rubygem-em-http-request-0:1.1.5-4.el7ost | Fixed | RHSA-2021:0937 |
No package ranges for this CVE.
Remediation
Red Hat mitigation
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update as soon as possible.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/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 4, 2026.
Score over time
2021-2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (14 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.91% (0.00905) | 58.45th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.91% (0.00905) | 58.29th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.09% (0.00092) | 39.67th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.09% (0.00092) | 39.62th | v3 (v2023.03.01) |
| Feb 10, 2024 | 0.09% (0.00092) | 37.59th | v3 (v2023.03.01) |
| Jan 7, 2024 | 0.11% (0.00112) | 44.40th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.09% (0.00092) | 37.71th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 15.35% (0.15351) | 91.59th | v2 (v2022.01.01) |
| Feb 3, 2022 | 4.50% (0.04504) | 76.47th | v1 |
| Jan 6, 2022 | 4.50% (0.04504) | 76.26th | v1 |
| Jan 5, 2022 | 1.04% (0.01040) | 65.70th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (13)
- https://access.redhat.com/security/cve/CVE-2020-13482 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1911457 Issue Tracking
- https://github.com/advisories/GHSA-q27f-v3r6-9v77 Advisory
- https://github.com/igrigorik/em-http-request/commit/e5fa144f8d21050dd1fc15a4dc8aa34ac6f30602
- https://github.com/igrigorik/em-http-request/issues/339 x_refsource_MISCExploitIssue TrackingPatchThird Party Advisory
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/em-http-request/CVE-2020-13482.yml
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MKYP5TR5NTVVDX5R4HCNNH2OQR7M4X3J/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z32PUJA6RGBZ3TKSOTGUXZ45662S3MVF/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MKYP5TR5NTVVDX5R4HCNNH2OQR7M4X3J/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z32PUJA6RGBZ3TKSOTGUXZ45662S3MVF/
- https://nvd.nist.gov/vuln/detail/CVE-2020-13482
- https://securitylab.github.com/advisories/GHSL-2020-094-igrigorik-em-http-request x_refsource_MISCExploitThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2020-13482
Change history (0)
No recorded changes yet.