CVE-2026-53976

CRITICAL 9.1

OpenChamber 1.11.7 Path Traversal File Read via allowOutsideWorkspace Parameter

CVSS Score

9.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-22
Vendor	bohdan triapitsyn
Product	openchamber
Published	Aug 6, 2026
Last Updated	Aug 6, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

Bohdan Triapitsyn / OpenChamber

0 ≤ 1.11.7

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/openchamber/openchamber github.com: https://github.com/openchamber/openchamber/commit/f1b9506132faf6c564a2694c7f33b94421a49b4a vulncheck.com: https://www.vulncheck.com/advisories/openchamber-path-traversal-file-read-via-allowoutsideworkspace-parameter

Credits

🔍 Katriel Moses