EM-HTTP-Request 1.1.5 uses the library eventmachine in an insecure way that allows an…
Priority LOW 34CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-295.
Summary
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.
Why it matters now
EPSS 0.00928 60th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed em-http-request (RubyGems): 1.1.6Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | em-http-request (RubyGems) | before 1.1.6 | 1.1.6 | Patch available | GHSA-q27f-v3r6-9v77 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- em-http-request (RubyGems) Vendor— Affected before 1.1.6 Fixed in 1.1.6 Patch available GHSA-q27f-v3r6-9v77
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:em-http-request_project:em-http-request:1.1.5:*:*:*:*:*:*:* | 1.1.5 | Vulnerable | Em-http-request Project |
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 32 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 33 | Vulnerable | Fedoraproject |
- cpe:2.3:a:em-http-request_project:em-http-request:1.1.5:*:*:*:*:*:*:* Versions 1.1.5 Vulnerable ·Em-http-request Project
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
Remediation
- Fix · GHSA-q27f-v3r6-9v77 em-http-request (RubyGems) Fixed in 1.1.6 Advisory →
Red Hat 1 advisory
- RHSA-2021:0937 Released 2021-03-18 · Red Hat rating Importantrubygem-em-http-request security update
- Red Hat OpenStack Platform 13.0 Operational Tools for RHEL 7 rubygem-em-http-request-1.1.5-4.el7ost
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenStack Platform 13.0 Operational Tools for RHEL 7 | Fixed | RHSA-2021:0937 |
Timeline
- 2026-10-02 Threatist record created from CVE-2020-13482
- 2026-10-03 Alias added: GHSA-q27f-v3r6-9v77
References
Exploit 2
Advisory 4
Other 5
- https://github.com/igrigorik/em-http-request/commit/e5fa144f8d21050dd1fc15a4dc8aa34ac6f30602
- https://github.com/igrigorik/em-http-request
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/em-http-request/CVE-2020-13482.yml
- https://lists.fedoraproject.org/archives/list/[email protected]/message/MKYP5TR5NTVVDX5R4HCNNH2OQR7M4X3J
- https://lists.fedoraproject.org/archives/list/[email protected]/message/Z32PUJA6RGBZ3TKSOTGUXZ45662S3MVF
Sources
- CVE-2020-13482 · CVE Program
- CVE-2020-13482 · NVD
- FIRST EPSS
- GHSA-q27f-v3r6-9v77 · GitHub Advisory Database · CC BY 4.0
- CVE-2020-13482 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences