Medium
ruby-faraday — security advisory
Faraday is an HTTP client library abstraction layer that provides a common interface over many adapters. Versions 2.0.0 through 2.14.1 still allow protocol-relative host override when the request target is passed as a URI object (rather than a String) to Faraday::Connection#build_exclusive_url. This bypasses the February 2026 fix for GHSA-33mh-2634-fwr2 and enables off-host request forgery: a request built from a fixed-base Faraday::Connection can be redirected to an attacker-controlled host, forwarding connection-scoped values such as Authorization headers and default query parameters. This issue has been fixed in version 2.14.3.
- Products
- ruby-faraday
- Affected versions
- 0.15.4-3, 0.15.4-3ubuntu0.1, 0.8.7-1, 0.9.1-1, 0.9.2-3, 1.1.0-6, 1.1.0-7, 2.10.0-2, 2.12.2-1, 2.14.0-1, 2.14.1-1, 2.14.3-1, 2.7.1-2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-33637
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:07 UTC · Revision 1
Source evidence
Faraday is an HTTP client library abstraction layer that provides a common interface over many adapters. Versions 2.0.0 through 2.14.1 still allow protocol-relative host override when the request target is passed as a URI object (rather than a String) to Faraday::Connection#build_exclusive_url. This bypasses the February 2026 fix for GHSA-33mh-2634-fwr2 and enables off-host request forgery: a request built from a fixed-base Faraday::Connection can be redirected to an attacker-controlled host, forwarding connection-scoped values such as Authorization headers and default query parameters. This issue has been fixed in version 2.14.3.
osv:UBUNTU-CVE-2026-33637
ruby-faraday
Fixed versions: Not specified
ruby-faraday
Fixed versions: Not specified
ruby-faraday
Fixed versions: Not specified
ruby-faraday
Fixed versions: Not specified
ruby-faraday
Fixed versions: Not specified
ruby-faraday
Fixed versions: Not specified
ruby-faraday
Fixed versions: Not specified
ruby-faraday
Fixed versions: Not specified
ruby-faraday
Fixed versions: Not specified
Complete source record
{
"id": "9dc653342be8d471c55a613efcc3aa53de3c7c378e1125699841146088ea08d9",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-33637",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-33637",
"summary": "Faraday is an HTTP client library abstraction layer that provides a common interface over many adapters. Versions 2.0.0 through 2.14.1 still allow protocol-relative host override when the request target is passed as a URI object (rather than a String) to Faraday::Connection#build_exclusive_url. This bypasses the February 2026 fix for GHSA-33mh-2634-fwr2 and enables off-host request forgery: a request built from a fixed-base Faraday::Connection can be redirected to an attacker-controlled host, forwarding connection-scoped values such as Authorization headers and default query parameters. This issue has been fixed in version 2.14.3.",
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"severity": "medium",
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"aliases": [
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"metrics": [
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"versions": [
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"modified": "2026-10-17T12:58:10.259576093Z",
"provider": "osv",
"upstream": [
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"references": [
"https://ubuntu.com/security/CVE-2026-33637",
"https://www.cve.org/CVERecord?id=CVE-2026-33637",
"https://github.com/advisories/GHSA-33mh-2634-fwr2",
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"source_id": "core-osv",
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"published_at": "2026-05-19T19:16:00+00:00"
}