by Kastro
Paper/Archive/CVE-2026-53649

CVE-2026-53649

BishopFox joro — Joro: Unauthenticated Cross-Origin Plugin Upload Leads to RCE

EPSS 0.3%CVSS 9.6
critical.is priorityof 100
34
CVSS 9.6 (CNA)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 26.2.262 × 205.2No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
joro< 1.1.1–CNA

Scores by source

GitHub_M (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/BishopFox/joro/security/advisories/GHSA-xqhv-chqm-fhccrefgithub.com/BishopFox/joro/releases/tag/1.1.1