Duplicate Advisory: Knowns Sandbox Escape: Unauthenticated Header Injection Grants AI Agent Unrestricted Access to Host Filesystem

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS No score.

Timeline

This record came from the full history of the GitHub Advisory Database, published 10 Sept 2026. New records show when each source confirmed them.

Sources

• GitHub Advisory Database: GHSA-w47m-jpv2-qfw5
• OSV: GHSA-w47m-jpv2-qfw5
• github.com/knowns-dev/knowns/security/advisories/GHSA-9h2q-r9fh-f98w
• nvd.nist.gov/vuln/detail/CVE-2026-88899
• github.com/knowns-dev/knowns/commit/37db0561b37b48b8bd035a417d7f1da6258ae657
• github.com/knowns-dev/knowns/blob/v0.30.0/internal/server/server.go#L1283-L1296
• github.com/knowns-dev/knowns/releases/tag/v0.31.0
• www.vulncheck.com/advisories/knowns-before-0.31.0-external-control-of-agent-working-directory-via-x-opencode-directory-header

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.