vulnerability / NVI-00016268 / Revision 1
RTK improperly trusts project-local filter configuration, allowing silent tampering of command output shown to LLM
GitHub lists this reviewed advisory for rtk. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
5.5 medium
GitHub source severity; exploitability and local consequence require separate evidence.
As of · GitHub Advisory Database
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
rtk
source listed< 0.32.0
RTK (Rust Token Killer) improperly trusts project-local configuration files. In versions prior to 0.32.0, RTK automatically loads `.rtk/filters.toml` from the working directory with highest priority and without user notification. An attacker can place a malicious filter file in a repository to apply regex-based modifications (e.g., `strip_lines_matching`) to shell command output before it is shown to the LLM, without any indication that the output has been modified. This allows attackers to selectively suppress or alter command output (including file contents, diffs, and security scan results) without detection, potentially concealing malicious code during AI-assisted development or review. ### Patch Fixed in v0.32.0 (PRs #623, #625): - `.rtk/filters.toml` is now blocked by default when untrusted, with a visible warning: `[rtk] WARNING: untrusted project filters — Filters NOT applied. Run rtk trust to review and enable.` - SHA-256 hash verification: if the file changes after trust, filters are blocked again until re-reviewed. - New `rtk trust` / `rtk untrust` commands for explicit user consent. - Trust store implemented in `src/trust.rs`; trust gate added in `src/toml_filter.rs
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-fvvm-949w-qj4w ↗
GitHub Advisory Database · vendor advisory
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Public revision history
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- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.