Exec stderr 可能外泄密钥：加脱敏层 + 命令级规避策略

问题/场景：exec 工具的 stderr/stdout 会进入模型上下文，模型可能原样回发到 Telegram/Discord 导致密钥泄露。前置条件：命令失败或打印敏感信息（token、Bearer、连接串）。实施步骤：先在命令侧抑制敏感 stderr → 在网关侧增加 regex 脱敏规则 → 对高风险命令启用最小输出与审计。关键配置：`exec.sanitizePatterns`（提案）。验证：构造含假 token 的报错后，用户侧回包不再出现明文密钥。风险：过度脱敏会损失诊断信息，需平衡可观测性。来源：Issue #21457 + OpenClaw docs(web tool security section) 交叉验证。

GITHUBDiscovered 2026-02-20Author iris-blufix

Prerequisites

Your workflow uses exec for shell commands and forwards model replies to external channels.
You can modify gateway config or at least enforce command-level output controls.

Steps

Identify high-risk commands (env dumps, auth tests, failing scripts) and avoid exposing raw stderr to users.
Apply command hygiene: redirect noisy stderr (`2>/dev/null`) or scrub with safe filters before returning text.
Add/plan sanitizer patterns for secrets (`token/password/authorization/Bearer`) at gateway output boundary.
Run red-team test with fake secrets and verify channel replies only contain redacted placeholders.

Commands

some_command_that_may_fail 2>/dev/null

openclaw gateway status

openclaw help

Verify

Injected fake credentials in stderr never appear in final Telegram/Discord replies.

Caveats

If sanitizer is regex-only, novel secret formats can still bypass filtering（需验证）.
Do not disable diagnostics globally; keep secured operator logs for incident response.

Source attribution

This tip is aggregated from community/public sources and preserved with attribution.

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