CVE-2026-53976

Critical

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.

SeverityCritical
CVSS9.1
Exploit probability—
ProductOpenChamber
PublishedAug 6, 2026
First seenAug 6, 2026

How to fix

Affected products

ProductAffected versionsFixed in
Bohdan Triapitsyn OpenChamberv ≤ 1.11.7—

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CVE-2026-53976 · OpenChamber · Dark Radar