Joro: Unauthenticated Cross-Origin Plugin Upload Leads to RCE
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass, Tampering, Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-306, CWE-352 and CWE-434.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- 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 |
|---|---|---|---|---|---|
| BishopFox | joro | before 1.1.1 | 1.1.1 | Patch available | CNA |
| — | github.com/BishopFox/joro (Go) | before 0.0.0-20260601151442-5c0ca35db828 | 0.0.0-20260601151442-5c0ca35db828 | Patch available | GHSA-xqhv-chqm-fhcc |
- joro VendorBishopFox Affected before 1.1.1 Fixed in 1.1.1 Patch available CNA
- github.com/BishopFox/joro (Go) Vendor— Affected before 0.0.0-20260601151442-5c0ca35db828 Fixed in 0.0.0-20260601151442-5c0ca35db828 Patch available GHSA-xqhv-chqm-fhcc
Remediation
- Fix · CNA joro (BishopFox) Fixed in 1.1.1
- Fix · GHSA-xqhv-chqm-fhcc github.com/BishopFox/joro (Go) Fixed in 0.0.0-20260601151442-5c0ca35db828 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-53649
- 2026-10-03 Alias added: GHSA-xqhv-chqm-fhcc
References
More BishopFox vulnerabilities
- TI-2025-19960 Server-Side Request Forgery (SSRF) in sliver teamserver CVSS 4.0MEDIUM 6.9
- TI-2023-17391 Sliver from v1.5.x to v1.5.39 has an improper cryptographic implementation, which allows… CVSS 3.1HIGH 8.1
- TI-2024-27463 BishopFox Sliver Authenticated Remote Code Execution CVSS 3.1HIGH 7.2
- TI-2026-65413 Sliver 1.7.7 Denial of Service via PE Parser Slice Bounds in Operator RPC CVSS 4.0MEDIUM 6.8
- TI-2025-19963 Sliver does not restricted traffic between Wireguard clients. CVSS 3.1MEDIUM 6.3
- TI-2026-26522 Sliver One-Click Remote Access: Insecure CORS & Unauthenticated MCP Interface CVSS 4.0MEDIUM 5.9
Sources
- CVE-2026-53649 · CVE Program
- CVE-2026-53649 · NVD
- FIRST EPSS
- GHSA-xqhv-chqm-fhcc · 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