HAX open-apis: Credential Theft via Server-Side Request Forgery (SSRF) in open-apis
Priority HIGH 79CWE-183Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-918 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00457 39th percentileScored 2026-11-07
Fix Fixed @haxtheweb/open-apis (haxtheweb): 26.0.0@haxtheweb/open-apis (npm): 26.0.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| haxtheweb | @haxtheweb/open-apis | 9.0.1 to before 26.0.0 | 26.0.0 | Patch available | CNA |
| — | @haxtheweb/open-apis (npm) | before 26.0.0 | 26.0.0 | Patch available | GHSA-4fg7-f244-3j49 |
- @haxtheweb/open-apis Vendorhaxtheweb Affected 9.0.1 to before 26.0.0 Fixed in 26.0.0 Patch available CNA
- @haxtheweb/open-apis (npm) Vendor— Affected before 26.0.0 Fixed in 26.0.0 Patch available GHSA-4fg7-f244-3j49
Remediation
- Fix · CNA @haxtheweb/open-apis (haxtheweb) Fixed in 26.0.0
- Fix · GHSA-4fg7-f244-3j49 @haxtheweb/open-apis (npm) Fixed in 26.0.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-46391
- 2026-10-03 Alias added: GHSA-4fg7-f244-3j49
References
More haxtheweb vulnerabilities
- TI-2026-34109 HAX CMS Vulnerable to Private Key Disclosure via Broken HMAC Implementation CVSS 4.0CRITICAL 9.3
- TI-2026-27339 HAX CMS's public /server-status endpoint exposes authentication tokens, user activity, and client IP addresses CVSS 4.0HIGH 8.7
- TI-2026-34113 Authenticated Remote Code Execution via File Overwrite CVSS 4.0CRITICAL 9.4
- TI-2025-23152 HAX CMS PHP allows Insecure File Upload to Lead to Remote Code Execution CVSS 3.1CRITICAL 10.0
- TI-2026-34194 HAX CMS: Stored XSS via '<video-player>' component allows arbitrary JavaScript execution and token theft CVSS 4.0CRITICAL 9.3
- TI-2026-34110 HAX CMS has a stored XSS via <iframe> that allows access to sensitive client-side data and account takeover CVSS 4.0CRITICAL 9.3
Sources
- CVE-2026-46391 · CVE Program
- CVE-2026-46391 · NVD
- FIRST EPSS
- GHSA-4fg7-f244-3j49 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences