CVE-2026-25765Public exploitNetwork attack vector

SSRF via protocol-relative URL host override

Published Feb 9, 2026 · Updated Feb 9, 2026

SSRF in lostisland Faraday 1.0.0 through 1.10.4 and 2.0.0 through 2.14.0 allows remote attackers to redirect application requests. Connection#build_exclusive_url passes a protocol-relative path to URI merging, which replaces the configured base authority with the path's host. Exploitation requires a consuming application to pass attacker-controlled paths into Faraday request methods, enabling off-host requests and possible disclosure of request data.

CVSS severity5.8
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in lostisland Faraday 1.0.0 through 1.10.4 and 2.0.0 through 2.14.0 allows remote attackers to redirect application requests. Connection#build_exclusive_url passes a protocol-relative path to URI merging, which replaces the configured base authority with the path's host. Exploitation requires a consuming application to pass attacker-controlled paths into Faraday request methods, enabling off-host requests and possible disclosure of request data.

The record

CVE
CVE-2026-25765
Published
Feb 9, 2026
Updated
Feb 9, 2026
Vendor
lostisland
Product
Faraday
Classifications
CWE-918, CAPEC-664
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.14.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

lostisland · Faradayversion=< 2.14.1

Published CVSS scores

5.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CAPEC-664Server Side Request Forgery

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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