by Kastro
Paper/Archive/CVE-2026-53975

CVE-2026-53975

Bohdan Triapitsyn OpenChamber — OpenChamber 1.11.7 Unauthenticated RCE via /api/fs/exec

EPSS 2%CVSS 9.8
critical.is priorityof 100
45
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 76.9.769 × 2015.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
OpenChamber≤ 1.11.7–CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/openchamber/openchamberpatchgithub.com/openchamber/openchamber/commit/f1b9506132faf6c564a2694c7f33b94421a49b4awriteupvulncheck.com/advisories/openchamber-unauthenticated-rce-via-api-fs-exec