High
SiYuan v3.1.12 before v3.8.6 Denial of Service via getDynamicIcon Template
Type: advisorySources: OSV
SiYuan v3.1.12 before v3.8.6 fails to restrict the Sprig template function map in the /api/icon/getDynamicIcon content parameter, allowing resource exhaustion. A publish reader, or anyone when publish auth is disabled, can use uncapped functions like until to OOM-kill the kernel with one request.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-109310
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 6 Nov 2026, 01:08 UTC · Revision 1
Source evidence
SiYuan v3.1.12 before v3.8.6 Denial of Service via getDynamicIcon Template
core-osv · Original sourcePublished 12 Oct 2026, 16:05 UTC
SiYuan v3.1.12 before v3.8.6 fails to restrict the Sprig template function map in the /api/icon/getDynamicIcon content parameter, allowing resource exhaustion. A publish reader, or anyone when publish auth is disabled, can use uncapped functions like until to OOM-kill the kernel with one request.
osv:CVE-2026-109310
Complete source record
{
"id": "3019f97943e9e9f3a1bbf8e314922533e7291a29b40266c70f84d6bcb354fc94",
"url": "https://osv.dev/vulnerability/CVE-2026-109310",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "SiYuan v3.1.12 before v3.8.6 Denial of Service via getDynamicIcon Template",
"summary": "SiYuan v3.1.12 before v3.8.6 fails to restrict the Sprig template function map in the /api/icon/getDynamicIcon content parameter, allowing resource exhaustion. A publish reader, or anyone when publish auth is disabled, can use uncapped functions like until to OOM-kill the kernel with one request.",
"evidence": "osv:CVE-2026-109310",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-109310",
"aliases": [
"CVE-2026-109310",
"GHSA-cxwr-r7cq-xw52"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/siyuan-note/siyuan",
"type": "GIT",
"events": [
{
"introduced": "cb057f1e4f5a8b6f3402f03f470967fc2a56b3e2"
},
{
"fixed": "158812497497c6fa8a6d1031bfa2f025a61ee5c2"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "3.1.12"
},
{
"fixed": "3.8.6"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "3.1.12"
},
{
"fixed": "3.8.6"
}
],
"source": "DESCRIPTION"
}
]
}
}
],
"versions": [
"v3.8.6-beta.2",
"v3.8.6-beta.1",
"v3.8.6-alpha.10",
"v3.8.6-alpha.9",
"v3.8.6-alpha.8",
"v3.8.6-alpha.7",
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"v3.8.6-alpha.2",
"v3.8.6-alpha.1",
"v3.8.5",
"v3.8.5-beta.5",
"v3.8.5-beta.3",
"v3.8.5-beta.2",
"v3.8.5-beta.1",
"v3.8.5-alpha.5",
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"v3.8.4",
"v3.8.4-beta.5",
"v3.8.4-beta.4",
"v3.8.4-beta.3",
"v3.8.3",
"v3.8.4-beta.2",
"v3.8.4-beta.1",
"v3.8.3-beta.1",
"v3.8.3-alpha.3",
"v3.8.3-alpha.2",
"v3.8.3-alpha.1",
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"v3.8.2-alpha.5",
"v3.8.2-alpha.4",
"v3.8.2-alpha.3",
"v3.8.2-alpha.1",
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"v3.8.1-beta.4",
"v3.8.1-beta.1",
"v3.8.0",
"v3.8.0-beta.2",
"v3.8.0-alpha.4",
"v3.8.0-alpha.3",
"v3.8.0-alpha.2",
"v3.7.4-alpha.4",
"v3.7.4-alpha.2",
"v3.7.3",
"v3.7.3-beta.2",
"v3.7.3-beta.1",
"v3.7.0-rc.2",
"v3.7.0-rc.1",
"v3.6.5",
"v3.7.0-dev12",
"v3.7.0-dev8",
"v3.7.0-dev5",
"v3.7.0-dev2",
"v3.6.5-dev2",
"v3.6.4",
"v3.6.4-dev2",
"v3.6.3",
"v3.6.2",
"v3.6.1",
"v3.6.0",
"v3.5.10",
"v3.5.9",
"v3.5.8",
"v3.5.8-dev2",
"v3.5.7",
"v3.5.5",
"v3.5.4",
"v3.5.4-dev5",
"v3.5.4-dev3",
"v3.5.4-dev2",
"v3.5.4-dev1",
"v3.5.3",
"v3.5.3-dev5",
"v3.5.3-dev4",
"v3.5.3-dev3",
"v3.5.3-dev2",
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"v3.5.2-dev2",
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"v3.5.1",
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"v3.5.1-dev1",
"v3.5.0",
"v3.5.0-dev2",
"v3.5.0-dev1",
"v3.4.2",
"v3.4.2-dev1",
"v3.4.1",
"v3.4.1-dev1",
"v3.4.0",
"v3.4.0-dev5",
"v3.4.0-dev4",
"v3.4.0-dev3",
"v3.4.0-dev2",
"v3.4.0-dev1",
"v3.3.6",
"v3.3.6-dev2",
"v3.3.6-dev1",
"v3.3.5",
"v3.3.4",
"v3.3.4-dev2",
"v3.3.4-dev1",
"v3.3.3",
"v3.3.3-dev5",
"v3.3.3-dev4",
"v3.3.3-dev3",
"v3.3.3-dev2",
"v3.3.3-dev1",
"v3.3.2",
"v3.3.2-dev2",
"v3.3.2-dev1",
"v3.3.1",
"v3.3.0",
"v3.3.0-dev4",
"v3.3.0-dev3",
"v3.2.1",
"v3.2.1-dev6",
"v3.2.1-dev5",
"v3.2.1-dev4",
"v3.2.1-dev3",
"v3.2.1-dev2",
"v3.2.0-dev10",
"v3.2.0-dev9",
"v3.2.0-dev8",
"v3.2.0-dev6",
"v3.2.0-dev4",
"v3.2.0-dev3",
"v3.2.0-dev2",
"v3.2.0-dev1",
"v3.1.32",
"v3.1.32-dev2",
"v3.1.31",
"v3.1.30",
"v3.1.30-dev1",
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"v3.1.29-dev3",
"v3.1.28",
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"v3.1.28-dev2",
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"v3.1.26-dev2",
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"v3.1.25",
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"v3.1.25-dev3",
"v3.1.24",
"v3.1.23",
"v3.1.22",
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"v3.1.22-dev1",
"v3.1.21",
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"v3.1.21-dev1",
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"v3.1.20-dev4",
"v3.1.20-dev3",
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"v3.1.18",
"v3.1.17",
"v3.1.16",
"v3.1.15",
"v3.1.15-dev3",
"v3.1.15-dev1",
"v3.1.14",
"v3.1.14-dev2",
"v3.1.13",
"v3.1.12"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109310.json"
}
}
],
"modified": "2026-10-28T02:30:45.805452514Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109310.json",
"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-cxwr-r7cq-xw52",
"https://nvd.nist.gov/vuln/detail/CVE-2026-109310",
"https://www.vulncheck.com/advisories/siyuan-3.1.12-before-3.8.6-denial-of-service-via-getdynamicicon-template"
],
"provider_metadata": {
"cwe_ids": [
"CWE-770"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109310.json"
}
},
"related_cves": [
{
"value": "CVE-2026-109310",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 513716,
"published_at": "2026-10-12T16:05:06.076+00:00"
}