Vulnerability · Published Sep 2, 2026 · Assigned by GitHub_M
CVE-2026-53649Joro: Unauthenticated Cross-Origin Plugin Upload Leads to RCE
Critical 9.6
In plain English
A critical-severity missing authentication in joro from BishopFox. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Joro is a web exploitation framework. Prior to version 1.1.1, Joro's default proxy mode exposes a local API on 127.0.0.1:9090 that performs no authentication and applies a wildcard CORS policy. Because plugin uploads use the CORS-safelisted multipart/form-data content type, cross-origin JavaScript on any page the operator visits can reach privileged endpoints - including uploading a native plugin and triggering a restart - directly through the operator's browser, with no preflight or credentials. Since plugins execute on load, this yields unauthenticated remote code execution as the operator's user from a single page visit. This issue has been patched in version 1.1.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/BishopFox/joro | 0.0.0-20260601151442-5c0ca35db828 | GHSA-xqhv-chqm-fhcc |
| Go | github.com/BishopFox/joro | 0.0.0-20260601151442-5c0ca35db828 | GO-2026-5947 |
Affected products (as reported)
Weakness: CWE-306, CWE-352, CWE-434, CWE-942 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
References
- https://github.com/BishopFox/joro/security/advisories/GHSA-xqhv-chqm-fhcc x_refsource_CONFIRM
- https://github.com/BishopFox/joro/releases/tag/1.1.1 x_refsource_MISC