/Vulnerability Library

OpenChamber <1.13.0 - Unauthenticated Arbitrary File Read

CVE-2026-53976
Verified

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.

Severity

Critical

CVSS Score

9.1

Exploit Probability

3%

Affected Product

openchamber

Published Date

August 7, 2026

Template Author

str4k3r

CVE-2026-53976.yaml
9.1Score

CVSS Metrics

CVSS Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVE ID:
cve-2026-53976
CWE ID:
cwe-22

References

https://www.vulncheck.com/advisories/openchamber-path-traversal-file-read-via-allowoutsideworkspace-parameterhttps://github.com/openchamber/openchamber/commit/f1b9506132faf6c564a2694c7f33b94421a49b4ahttps://github.com/openchamber/openchamberhttps://nvd.nist.gov/vuln/detail/CVE-2026-53976

Remediation Steps

Update to the latest version that fixes this vulnerability.