CVE-2026-46391Public exploitNetwork attack vector

Credential theft via permissive hostname substring checks

Published Jun 5, 2026 · Updated Jun 5, 2026

SSRF in @haxtheweb/open-apis before 26.0.0 allows remote attackers to steal Basic Authorization credentials via crafted API requests. Three server-side modules authorize outbound credentials when a user-controlled hostname merely contains a hard-coded trusted-domain substring. No privileges or user interaction are required; successful requests disclose secrets intended for trusted domains and can expose unreleased LMS content.

CVSS severity8.7
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in @haxtheweb/open-apis before 26.0.0 allows remote attackers to steal Basic Authorization credentials via crafted API requests. Three server-side modules authorize outbound credentials when a user-controlled hostname merely contains a hard-coded trusted-domain substring. No privileges or user interaction are required; successful requests disclose secrets intended for trusted domains and can expose unreleased LMS content.

The record

CVE
CVE-2026-46391
Published
Jun 5, 2026
Updated
Jun 5, 2026
Vendor
HAXTheWeb
Product
open-apis
Classifications
CWE-183, CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>= 9.0.1, < 26.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HAXTheWeb · open-apisversion=>= 9.0.1, < 26.0.0

Published CVSS scores

8.7GitHub CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-183Permissive List of Allowed Inputs
CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

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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