XSS in Adonisjs Http-Server
CVE-2026-61526
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.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (9.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Adonisjs Http-server — versions >= 8.0.0-next.0, < 8.2.1, >= 9.0.0, < 9.1.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-61526?
- CVE-2026-61526 is a medium-severity vulnerability in Adonisjs Http-Server, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-07-30.
- How severe is CVE-2026-61526?
- Medium severity. CVSS v3 base score is 6.1 out of 10.