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Http Server CVE-2026-61526

| EUVDEUVD-2026-51310 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-07-30 GitHub_M
6.1
CVSS 3.1 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
6.1 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Primary rating from Vendor (GitHub_M) · only source for this CVE.

CVSS VectorVendor: GitHub_M

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

3
Patch available
Jul 30, 2026 - 22:20 EUVD
Source Code Evidence Fetched
Jul 30, 2026 - 21:38 vuln.today
Analysis Generated
Jul 30, 2026 - 21:38 vuln.today

DescriptionCVE.org

AdonisJS HTTP Server is a package for handling HTTP requests in the AdonisJS framework. In versions 8.0.0-next.0 through 8.2.0 and 9.0.0 through 9.0.2, the error.message is interpolated into the default HTML exception response without escaping, allowing a crafted missing-route URL to execute attacker-controlled JavaScript when a victim opens it and no custom status page or JSON response handles the error. When debug mode is disabled and no custom status page handles the error, the default HTML renderer interpolates error.message directly into an HTML response. This issue is fixed in versions 8.2.1 and 9.1.0.

AnalysisAI

Reflected XSS in AdonisJS HTTP Server (versions 8.0.0-next.0 through 8.2.0 and 9.0.0 through 9.0.2) enables remote unauthenticated attackers to execute arbitrary JavaScript in a victim's browser by crafting a malicious 404 URL containing an embedded HTML payload. The framework's default exception handler interpolates the unescaped request path directly into the HTML error response when debug mode is disabled and no custom error handler is configured. No public exploit has been identified at time of analysis, but the fix commit includes a working proof-of-concept test demonstrating a cookie-exfiltration attack using fetch('/dashboard',{credentials:'include'}), confirming practical exploitability.

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CVE-2026-61526 vulnerability details – vuln.today

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