CVE-2026-88938: fallo de gravedad alta en knowns-dev knowns
knowns through 0.33.0 Path Traversal via code.find MCP tool
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.1epss 0.5%
knowns through 0.33.0 fails to confine the path argument of the code.find MCP tool to the project root, allowing AI agent sessions to read source files anywhere on the host. Attackers can supply absolute paths or relative traversal sequences to the path argument and retrieve full file contents from outside the intended project directory.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Productos afectados
knowns-dev · knownsCVEs relacionadas — knowns-dev knowns
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-86439HIGHknowns before 0.30.0 Path Traversal via MCP doc and memory toolsEPSS 1.1%CVE-2026-86538HIGHknowns before 0.30.0 Path Traversal via templateFile parameterEPSS 1.0%CVE-2026-86543CRITICALknowns before 0.30.0 Unauthenticated Management API ExposureEPSS 0.9%CVE-2026-88899CRITICALknowns before 0.31.0 External Control of Agent Working Directory via x-opencode-directory HeaderEPSS 0.8%CVE-2026-86541HIGHknowns before 0.30.0 Path Traversal via code.replace MCP actionEPSS 0.8%CVE-2026-86775HIGHknowns before 0.30.0 Path Traversal via Document APIEPSS 0.7%
Referencias
https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/mcp/handlers/code.go#L1293-L1354https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/mcp/handlers/code.go#L873-L902https://github.com/knowns-dev/knowns/security/advisories/GHSA-5cj9-fcqq-g2h7https://www.vulncheck.com/advisories/knowns-through-0.33.0-path-traversal-via-code-find-mcp-tool