Medium
Open OnDemand allowlist bypass using symlinks in directory downloads (TOCTOU)
Type: advisorySources: OSV
Open OnDemand is an open-source HPC portal. Prior to versions 4.0.8 and 3.1.16, users can craft a "Time of Check to Time of Use" (TOCTOU) attack when downloading zip files to access files outside of the OOD_ALLOWLIST. This vulnerability impacts sites that use the file browser allowlists in all current versions of OOD. However, files accessed are still protected by the UNIX permissions. Open OnDemand versions 4.0.8 and 3.1.16 have been patched for this vulnerability.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-62724
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 13:11 UTC · Revision 1
Source evidence
Open OnDemand allowlist bypass using symlinks in directory downloads (TOCTOU)
core-osv · Original sourcePublished 20 Nov 2025, 16:53 UTC
Open OnDemand is an open-source HPC portal. Prior to versions 4.0.8 and 3.1.16, users can craft a "Time of Check to Time of Use" (TOCTOU) attack when downloading zip files to access files outside of the OOD_ALLOWLIST. This vulnerability impacts sites that use the file browser allowlists in all current versions of OOD. However, files accessed are still protected by the UNIX permissions. Open OnDemand versions 4.0.8 and 3.1.16 have been patched for this vulnerability.
osv:CVE-2025-62724
Complete source record
{
"id": "1ac630ea19dab7c7f9e2ebea3fe3ab0a2509cc572ae7fe6ef3a9fb0fcff19bcd",
"url": "https://osv.dev/vulnerability/CVE-2025-62724",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Open OnDemand allowlist bypass using symlinks in directory downloads (TOCTOU)",
"summary": "Open OnDemand is an open-source HPC portal. Prior to versions 4.0.8 and 3.1.16, users can craft a \"Time of Check to Time of Use\" (TOCTOU) attack when downloading zip files to access files outside of the OOD_ALLOWLIST. This vulnerability impacts sites that use the file browser allowlists in all current versions of OOD. However, files accessed are still protected by the UNIX permissions. Open OnDemand versions 4.0.8 and 3.1.16 have been patched for this vulnerability.",
"evidence": "osv:CVE-2025-62724",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2025-62724",
"aliases": [
"CVE-2025-62724",
"GHSA-vjpg-34px-gjrw"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/osc/ondemand",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "6a7b588dd12821f4554a1be7fa11a6b6ab6c7dc1"
},
{
"fixed": "b2d1f2a392acb060bb76d2c4f52fe58c156d69c1"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "4.0.8"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "3.1.16"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
}
]
}
}
],
"versions": [
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-62724.json"
}
}
],
"modified": "2026-10-28T02:30:35.337902772Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62724.json",
"https://github.com/OSC/ondemand/security/advisories/GHSA-vjpg-34px-gjrw",
"https://nvd.nist.gov/vuln/detail/CVE-2025-62724"
],
"provider_metadata": {
"cwe_ids": [
"CWE-367",
"CWE-61"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62724.json"
}
},
"related_cves": [
{
"value": "CVE-2025-62724",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 502926,
"published_at": "2025-11-20T16:53:13.495+00:00"
}