Vulnerability · Published Aug 6, 2026 · Assigned by VulnCheck

CVE-2026-53975OpenChamber 1.11.7 Unauthenticated RCE via /api/fs/exec

Critical 9.8

In plain English

A critical-severity OS command injection in OpenChamber from Bohdan Triapitsyn. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)1.7%top 23.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OpenChamber 1.11.7 contains an unauthenticated remote code execution vulnerability that allows remote attackers to execute arbitrary shell commands by sending crafted POST requests to the /api/fs/exec endpoint, which passes commands verbatim to Node.js spawn() without any allowlist, blocklist, or argument validation. The authentication middleware becomes a no-op when UI_PASSWORD is not configured, matching the default Docker deployment, enabling attackers to execute arbitrary OS commands as the application user and retrieve full command output including stdout, stderr, and exit code from the server response.

Affected products (as reported)

Vendor	Product	Versions
Bohdan Triapitsyn	OpenChamber	0 – through 1.11.7

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Product Advisory product
Patch Commit patch
https://www.vulncheck.com/advisories/openchamber-unauthenticated-rce-via-api-fs-exec third-party-advisory