High
Snipe-IT before 8.7.1 Denial of Service via Unbounded Note Field
Type: advisorySources: OSV
Snipe-IT before 8.7.1 fails to validate the length of the note field in the POST /account/accept/{acceptance} endpoint, allowing authenticated users to submit unbounded input that reaches synchronous CommonMark rendering. Attackers can submit large note values to exhaust PHP worker CPU and cause denial of service through resource exhaustion in the markdown parsing pipeline.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-86734
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 01:12 UTC · Revision 1
Source evidence
Snipe-IT before 8.7.1 Denial of Service via Unbounded Note Field
core-osv · Original sourcePublished 8 Sept 2026, 15:14 UTC
Snipe-IT before 8.7.1 fails to validate the length of the note field in the POST /account/accept/{acceptance} endpoint, allowing authenticated users to submit unbounded input that reaches synchronous CommonMark rendering. Attackers can submit large note values to exhaust PHP worker CPU and cause denial of service through resource exhaustion in the markdown parsing pipeline.
osv:CVE-2026-86734
Complete source record
{
"id": "ad0df2009b38dea8787c95407374096dac2325fa2cf1761edceab35fbc484c72",
"url": "https://osv.dev/vulnerability/CVE-2026-86734",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Snipe-IT before 8.7.1 Denial of Service via Unbounded Note Field",
"summary": "Snipe-IT before 8.7.1 fails to validate the length of the note field in the POST /account/accept/{acceptance} endpoint, allowing authenticated users to submit unbounded input that reaches synchronous CommonMark rendering. Attackers can submit large note values to exhaust PHP worker CPU and cause denial of service through resource exhaustion in the markdown parsing pipeline.",
"evidence": "osv:CVE-2026-86734",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-86734",
"aliases": [
"CVE-2026-86734",
"GHSA-4vcv-fc5x-jjwv"
],
"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/grokability/snipe-it",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "d1e89f748be051d72526e2316d76b382e91aef39"
},
{
"fixed": "66770cfe20cb135e2b7022c7a83d01e6783c914a"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:snipeitapp:snipe-it:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "8.7.1"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "66770cfe20cb135e2b7022c7a83d01e6783c914a"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v8.7.0",
"v8.4.0",
"v8.3.3",
"v8.3.2",
"v8.3.1",
"v8.3.0",
"v8.2.1",
"v8.2.0",
"v8.1.18",
"v8.1.17",
"v8.1.16",
"v8.1.15",
"v8.1.4",
"v8.1.3",
"v8.1.2",
"v8.1.1",
"v8.1.0",
"v8.0.4",
"v8.0.3",
"v8.0.2",
"v8.0.1",
"v7.1.15",
"v7.1.14",
"v7.0.13",
"v7.0.10",
"v7.0.9",
"v7.0.8",
"v7.0.7",
"v7.0.6",
"v7.0.5",
"v7.0.0-pre",
"v6.3.1",
"v6.3.0",
"v6.0.10",
"v6.0.6",
"v6.0.5",
"v6.0.4",
"v6.0.3",
"v6.0.1",
"v6.0.0",
"v6.0.0-RC-8",
"v6.0.0-GM",
"v6.0.0-RC-5",
"v6.0.0-RC-7",
"v6.0.0-RC-6",
"v6.0.0-RC-4",
"v6.0.0-RC-3",
"v6.0.0-RC-2",
"v6.0.0-RC-1",
"v5.1.8",
"v5.1.7",
"5.1.7",
"v5.1.6",
"v5.1.4",
"v5.1.3",
"v5.1.2",
"v5.1.1",
"v5.1.0",
"v5.0.12",
"v5.0.11",
"v5.0.10",
"v5.0.9",
"v5.0.8",
"v5.0.7",
"v5.0.6",
"v5.0.5",
"v5.0.0-beta-7-GM",
"v5.0.0-beta-6-GM",
"v5.0.0-beta-5",
"v5.0.0-beta-4",
"v5.0.0-beta-3.0",
"v4.9.4",
"v4.9.3",
"v4.9.2",
"v4.9.1",
"v4.9.0",
"v4.8.0",
"v4.7.8",
"v4.7.7",
"v4.7.5",
"v4.7.4",
"v4.7.3",
"v4.7.2",
"v4.7.0",
"v4.6.18",
"v4.6.17",
"v4.6.16",
"v4.6.15",
"v4.6.14",
"v4.6.13",
"v4.6.12",
"v4.6.11",
"v4.6.10",
"v4.6.9",
"v4.6.8",
"v4.6.7",
"v4.6.6",
"v4.6.5",
"v4.6.4",
"v4.6.3",
"v4.6.2",
"v4.6.1",
"v4.6.0",
"v4.5.0",
"v4.4.1",
"v4.4.0",
"v4.3.0",
"v4.2.0",
"v4.1.14",
"v4.1.13",
"v4.1.12",
"v4.1.11",
"v4.1.10",
"v4.1.9",
"v4.1.8",
"v4.1.7",
"v4.1.6",
"v4.1.5",
"v4.1.4",
"v4.1.3",
"v4.1.2",
"v4.1.1",
"v4.1.0",
"v4.0.15",
"v4.0.14",
"v4.0.13",
"v4.0.12",
"v4.0.11",
"v4.0.10",
"v4.0.9",
"v4.0.8",
"v4.0.7",
"v4.0.6",
"v4.0.5",
"v4.0.4",
"v4.0.3",
"v4.0.2",
"v4.0.1",
"v4.0",
"v3.6.6",
"v3.6.5",
"v4.0-alpha-2",
"v3.6.4",
"v3.6.3",
"v3.6.2",
"v3.6.1",
"v3.6.0",
"v3.5.2",
"v3.5.1",
"v3.5.0",
"v3.5.0-beta2",
"v3.5.0-beta",
"v3.4.0-beta",
"v3.4.0-alpha",
"v3.3.0-beta",
"3.2.0",
"v3.1.0",
"v3.0",
"v3.0-beta.3",
"v3.0-beta.1",
"v3.0.0-beta",
"v3.0-alpha2",
"v3.0-alpha"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86734.json"
}
}
],
"modified": "2026-10-28T02:30:41.423878710Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86734.json",
"https://github.com/grokability/snipe-it/security/advisories/GHSA-4vcv-fc5x-jjwv",
"https://nvd.nist.gov/vuln/detail/CVE-2026-86734",
"https://www.vulncheck.com/advisories/snipe-it-before-8.7.1-denial-of-service-via-unbounded-note-field",
"https://github.com/grokability/snipe-it/commit/66770cfe20cb135e2b7022c7a83d01e6783c914a"
],
"provider_metadata": {
"cwe_ids": [
"CWE-400"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86734.json"
}
},
"related_cves": [
{
"value": "CVE-2026-86734",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 508932,
"published_at": "2026-09-08T15:14:03.726+00:00"
}