All vulnerabilities GHSA-8x2w-m5v2-phxr rsigma: --rules-dir confinement bypass lets any MCP tool caller read and mutate arbitrary files highCVSS 8.5CWE-22 Vendor Timescale Package rsigma-mcp cargo Affected >= 0.16.0, < 0.23.0 Fixed in 0.23.0 Disclosed 2026-09-30 Credit Avishai Gonen path-traversalmcp Published advisory