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CVE Record

CVE-2020-13482: EM-HTTP-Request 1.1.5 uses the library eventmachine in an insecure way that allows an attacker to perform a...

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2020-13482 affects EM-HTTP-Request 1.1.5. Its HTTPS handling may accept a valid certificate for the wrong hostname, letting a network-positioned attacker impersonate a server. Business risk depends on whether affected applications send credentials, tokens, or sensitive data through this library.

Executive priority

Treat as a targeted remediation item, not an emergency based on current evidence. Prioritize systems using the library for sensitive outbound HTTPS traffic, because successful interception could expose data or alter trusted server responses.

Technical view

The reported issue is missing TLS hostname verification in EM-HTTP-Request 1.1.5 when using eventmachine. Certificate trust alone is insufficient; the client must also confirm the certificate matches the requested host. Fedora advisories and GitHub Security Lab are cited, but the bundle does not provide CVSS, CWE, or fixed-version details.

Likely exposure

Exposure is likely limited to Ruby applications that use EM-HTTP-Request 1.1.5 for HTTPS outbound requests. Risk is higher where traffic may cross untrusted networks, proxies, Wi-Fi, or internet paths, and where the requests carry credentials or sensitive business data.

Exploitation context

The source bundle does not cite active exploitation, and KEV is false. Exploitation would require an attacker who can intercept or redirect network traffic and present a certificate that is trusted but not valid for the intended hostname.

Researcher notes

The bundle identifies the root flaw but lacks CVSS scoring, CWE mapping, affected CPEs, and fixed-version metadata. Do not broaden scope beyond EM-HTTP-Request 1.1.5 without additional vendor evidence. Fedora advisories indicate downstream packaging relevance.

Mitigation direction

  • Inventory applications and packages using EM-HTTP-Request 1.1.5.
  • Check project, Fedora, and vendor guidance for fixed package versions.
  • Update affected packages where vendor fixes are available.
  • Avoid sending sensitive data through affected clients until remediated.
  • Confirm HTTPS clients enforce certificate hostname verification.

Validation and detection

  • Search dependency manifests and lockfiles for em-http-request version 1.1.5.
  • Check distro package inventories against Fedora advisory applicability.
  • Review outbound HTTPS code paths that rely on EM-HTTP-Request.
  • Verify TLS client configuration includes hostname validation.
  • Prioritize services transmitting credentials, tokens, or regulated data.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2020-13482 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.