Brook's tproxy server is vulnerable to a drive-by command injection.
Priority MEDIUM 46CWE-78Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- 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-78.
Summary
Brook is a cross-platform programmable network tool. The `tproxy` server is vulnerable to a drive-by command injection. An attacker may fool a victim into visiting a malicious web page which will trigger requests to the local `tproxy` service leading to remote code execution. A patch is available in version 20230606.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0158 75th percentileScored 2026-11-07
Fix Fixed brook (txthinking): 20230606github.com/txthinking/brook (Go): 20230606
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 |
|---|---|---|---|---|---|
| txthinking | brook | before 20230606 | 20230606 | Patch available | CNA |
| — | github.com/txthinking/brook (Go) | before 20230606 | 20230606 | Patch available | GHSA-vfrj-fv6p-3cpf |
- brook Vendortxthinking Affected before 20230606 Fixed in 20230606 Patch available CNA
- github.com/txthinking/brook (Go) Vendor— Affected before 20230606 Fixed in 20230606 Patch available GHSA-vfrj-fv6p-3cpf
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:txthinking:brook:*:*:*:*:*:*:*:* | before 20230606 | Vulnerable | txthinking |
- cpe:2.3:a:txthinking:brook:*:*:*:*:*:*:*:* Versions before 20230606 Vulnerable ·txthinking
Remediation
- Fix · CNA brook (txthinking) Fixed in 20230606
- Fix · GHSA-vfrj-fv6p-3cpf github.com/txthinking/brook (Go) Fixed in 20230606 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-33965
- 2026-10-03 Alias added: GHSA-vfrj-fv6p-3cpf
References
Sources
- CVE-2023-33965 · CVE Program
- CVE-2023-33965 · NVD
- FIRST EPSS
- GHSA-vfrj-fv6p-3cpf · 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