OpenChamber 1.11.7 Unauthenticated RCE via /api/fs/exec
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-53975
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 11:25 UTC · Revision 1
Source evidence
OpenChamber 1.11.7 Unauthenticated RCE via /api/fs/exec
core-osv · Original sourcePublished 6 Aug 2026, 14:06 UTC
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.
osv:CVE-2026-53975
Complete source record
{
"id": "c204b31a458fa59f7deeec1977832022b742b6e529e29439873652d98d61209e",
"url": "https://osv.dev/vulnerability/CVE-2026-53975",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "OpenChamber 1.11.7 Unauthenticated RCE via /api/fs/exec",
"summary": "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.",
"evidence": "osv:CVE-2026-53975",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2026-53975",
"aliases": [
"CVE-2026-53975"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/openchamber/openchamber",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "f1b9506132faf6c564a2694c7f33b94421a49b4a"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"last_affected": "1.11.7"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "f1b9506132faf6c564a2694c7f33b94421a49b4a"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53975.json"
}
}
],
"modified": "2026-10-28T02:30:28.180347022Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53975.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-53975",
"https://www.vulncheck.com/advisories/openchamber-unauthenticated-rce-via-api-fs-exec",
"https://github.com/openchamber/openchamber/commit/f1b9506132faf6c564a2694c7f33b94421a49b4a",
"https://github.com/openchamber/openchamber"
],
"provider_metadata": {
"cwe_ids": [
"CWE-78"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53975.json"
}
},
"related_cves": [
{
"value": "CVE-2026-53975",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 494945,
"published_at": "2026-08-06T14:06:12.887+00:00"
}