Hermes WebUI < 0.51.269 Workspace Boundary Bypass via api/workspace.py_CVE-2026-49957

{
    "lastseen": "",
    "description": "Hermes WebUI before version 0.51.269 contains a workspace boundary bypass vulnerability that allows authenticated attackers to circumvent blocked-root path checks by exploiting an early return in the SSH/remote terminal profile workspace resolution logic within _remote_terminal_workspace_candidate(). Attackers can configure a remote terminal working directory to a system directory such as /etc, causing the workspace resolution path to accept it as a trusted local workspace root before the _is_blocked_workspace_path() guard executes, enabling read access to local system files through workspace file-read helpers.",
    "published": "2026-06-09T16:25:10.651Z",
    "modified": "2026-06-09T16:25:10.651Z",
    "type": "cve",
    "title": "Hermes WebUI < 0.51.269 Workspace Boundary Bypass via api/workspace.py",
    "source": "VulnCheck",
    "references": "https://github.com/nesquena/hermes-webui/releases/tag/v0.51.269\nhttps://github.com/nesquena/hermes-webui/pull/3731\nhttps://github.com/nesquena/hermes-webui/pull/3744\nhttps://github.com/nesquena/hermes-webui/commit/91a89fb5d5c0bf87932917f9914ad0150ea62fe4\nhttps://www.vulncheck.com/advisories/hermes-webui-workspace-boundary-bypass-via-api-workspace-py",
    "id": "CVE-2026-49957",
    "bulletinFamily": "",
    "cwe": [
        "CWE-22"
    ],
    "cvelist": null,
    "sourceData": "nesquena hermes-webui 0",
    "sourceHref": "",
    "cvss": {
        "score": 6.3,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "hermes-webui",
    "version": "0",
    "vendor": "nesquena",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}