Description
OpenChamber 1.11.7 contains a path traversal vulnerability in the file-serving endpoints /api/fs/read, /api/fs/stat, and /api/fs/raw that allows unauthenticated remote attackers to read arbitrary files by supplying the allowOutsideWorkspace=true query parameter alongside an absolute path, bypassing the workspace boundary check in resolveReadPathFromContext. Attackers can exploit the vacuous isPathWithinRoot guard to read sensitive files such as the JWT signing secret, SSH private keys, API credentials, and environment variables, enabling full authentication bypass by forging session cookies on password-protected deployments.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Bohdan Triapitsyn | OpenChamber | ≤ 1.11.7 | — |
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- OpenChamber <1.13.0 - Unauthenticated Arbitrary File Read http/cves/2026/CVE-2026-53976.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
References
- Product Advisory product
- Patch Commit patch
- https://www.vulncheck.com/advisories/openchamber-path-traversal-file-read-via-allowoutsideworkspace-parameter third-party-advisory