High
Nesquena Hermes WebUI Arbitrary File Deletion via Unvalidated session_id
Type: advisorySources: OSV
Hermes WebUI contains an arbitrary file deletion vulnerability in the /api/session/delete endpoint that allows authenticated attackers to delete files outside the session directory by supplying an absolute path or path traversal payload in the session_id parameter. Attackers can exploit unvalidated session identifiers to construct paths that bypass the SESSION_DIR boundary and delete writable JSON files on the host system.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-6832
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 04:30 UTC · Revision 1
Source evidence
Nesquena Hermes WebUI Arbitrary File Deletion via Unvalidated session_id
core-osv · Original sourcePublished 21 Apr 2026, 21:44 UTC
Hermes WebUI contains an arbitrary file deletion vulnerability in the /api/session/delete endpoint that allows authenticated attackers to delete files outside the session directory by supplying an absolute path or path traversal payload in the session_id parameter. Attackers can exploit unvalidated session identifiers to construct paths that bypass the SESSION_DIR boundary and delete writable JSON files on the host system.
osv:CVE-2026-6832
Complete source record
{
"id": "f6e6312d909ba78548ca10d7f008aaf6a645a074ce41f14bc291a76d5f727938",
"url": "https://osv.dev/vulnerability/CVE-2026-6832",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Nesquena Hermes WebUI Arbitrary File Deletion via Unvalidated session_id",
"summary": "Hermes WebUI contains an arbitrary file deletion vulnerability in the /api/session/delete endpoint that allows authenticated attackers to delete files outside the session directory by supplying an absolute path or path traversal payload in the session_id parameter. Attackers can exploit unvalidated session identifiers to construct paths that bypass the SESSION_DIR boundary and delete writable JSON files on the host system.",
"evidence": "osv:CVE-2026-6832",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-6832",
"aliases": [
"CVE-2026-6832"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/nesquena/hermes-webui",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "3cc5839bf303fa6758bfdac538507407a2929655"
},
{
"fixed": "f6e1612c7e9aab97a0866ca8f3985f1fd99f52f6"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:get-hermes:hermes_web_ui:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "0.50.32"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "3cc5839bf303fa6758bfdac538507407a2929655"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "f6e1612c7e9aab97a0866ca8f3985f1fd99f52f6"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v0.50.132"
},
{
"range": [
{
"fixed": "3cc5839bf303fa6758bfdac538507407a2929655"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v0.50.32"
}
]
}
}
],
"versions": [
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"v0.50.30",
"v0.50.29",
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"v0.39.0",
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"v0.38.5",
"v0.38.4",
"v0.38.3",
"v0.38.2",
"v0.38.1",
"v0.38.0",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6832.json"
}
}
],
"modified": "2026-10-28T02:30:25.884384822Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6832.json",
"https://github.com/nesquena/hermes-webui/releases/tag/v0.50.132",
"https://github.com/nesquena/hermes-webui/releases/tag/v0.50.32",
"https://nvd.nist.gov/vuln/detail/CVE-2026-6832",
"https://www.vulncheck.com/advisories/nesquena-hermes-webui-arbitrary-file-deletion-via-unvalidated-session-id",
"https://github.com/nesquena/hermes-webui/pull/409",
"https://github.com/nesquena/hermes-webui/pull/412",
"https://github.com/nesquena/hermes-webui/commit/3cc5839bf303fa6758bfdac538507407a2929655"
],
"provider_metadata": {
"cwe_ids": [
"CWE-22"
],
"cna_assigner": "VulnCheck",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"fixed": "PR #409"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
},
{
"extracted_events": [
{
"range": [
{
"fixed": "pr #409"
}
],
"source": "CPE_FIELD",
"strategy": "CPEApplicability"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6832.json"
}
},
"related_cves": [
{
"value": "CVE-2026-6832",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 492466,
"published_at": "2026-04-21T21:44:55.301+00:00"
}