GHSA-84g5-x8j3-7235
Netfoil has incorrect allowlist enforcement
Summary
Rules could be bypassed by changing the first character: example.com could be be bypassed by e.g. fxample.com.
Details
Off-by-one error in the suffixtrie implementation.
Impact
The domain filter could be bypassed. Please note that DNS filtering alone is not enough to block malicious traffic.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
What each source reports
GitHub Advisories Score used
Netfoil has incorrect allowlist enforcement
Summary
Rules could be bypassed by changing the first character: example.com could be be bypassed by e.g. fxample.com.
Details
Off-by-one error in the suffixtrie implementation.
Impact
The domain filter could be bypassed. Please note that DNS filtering alone is not enough to block malicious traffic.
- Record
GHSA-84g5-x8j3-7235- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-183, CWE-193
- Updated
- 2026-11-02
OSV
Netfoil has incorrect allowlist enforcement
Summary
Rules could be bypassed by changing the first character: example.com could be be bypassed by e.g. fxample.com.
Details
Off-by-one error in the suffixtrie implementation.
Impact
The domain filter could be bypassed. Please note that DNS filtering alone is not enough to block malicious traffic.
- Record
GHSA-84g5-x8j3-7235- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-183, CWE-193
- Updated
- 2026-11-02
OSVGO-2026-5240No score
Netfoil has incorrect allowlist enforcement in github.com/tinfoil-factory/netfoil
Netfoil has incorrect allowlist enforcement in github.com/tinfoil-factory/netfoil
- Record
GO-2026-5240- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/tinfoil-factory/netfoilGo | before 0.2.1 | 0.2.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
GHSA-84g5-x8j3-7235 is a medium vulnerability (CVSS 6.9) in github.com/tinfoil-factory/netfoil, published April 29, 2026. No source lists public exploit code. Fixed in github.com/tinfoil-factory/netfoil 0.2.1.