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CVE-2026-46391

HAX open-apis: Credential Theft via Server-Side Request Forgery (SSRF) in open-apis

HIGH
8.7
CVSS Score
Published: June 5, 2026 at 06:18 PM UTC
Updated: October 26, 2026 at 11:10 AM UTC
1 product affected across 1 vendorOpen Apis

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Severity
HIGH8.7
Exploit prediction
EPSS 0.5%
SSVC
PoC

Description

HAX CMS helps manage microsite universe with PHP or NodeJs backends. Starting in version 9.0.1 and prior to version 26.0.0 of @haxtheweb/open-apis, multiple functions conduct substring-only matching to validate hostnames to which basic authorization should be sent. An attacker can append the matched substrings to an attacker-controlled endpoint and capture authentication. Version 26.0.0 fixes the issue.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Open Apis· Haxtheweb
90%
>= 9.0.1, < 26.0.0
Affected range stops below 26.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_CONFIRM
Source: cverecord
https://github.com/haxtheweb/issues/security/advisories/GHSA-4fg7-f244-3j49

SSVC — Action Prioritization

SSVCPoCAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-183CWE-918

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