Critical
Snipe-IT before 8.7.0 CSS Injection via Custom CSS
Type: advisorySources: OSV
Snipe-IT versions before 8.7.0 contain a CSS injection vulnerability in the Custom CSS field due to incomplete sanitization that reverses HTML encoding on greater-than and double-quote characters. Superusers can plant malicious CSS payloads using @import and url() references to exfiltrate CSRF tokens from other superusers via attribute-selector rules, enabling account takeover.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-86738
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 12:01 UTC · Revision 1
Source evidence
Snipe-IT before 8.7.0 CSS Injection via Custom CSS
core-osv · Original sourcePublished 8 Sept 2026, 15:14 UTC
Snipe-IT versions before 8.7.0 contain a CSS injection vulnerability in the Custom CSS field due to incomplete sanitization that reverses HTML encoding on greater-than and double-quote characters. Superusers can plant malicious CSS payloads using @import and url() references to exfiltrate CSRF tokens from other superusers via attribute-selector rules, enabling account takeover.
osv:CVE-2026-86738
Complete source record
{
"id": "831014b913d033585e4f23d1fb9e1c971be2ca712e3e2c93fa8a034dfdb90ce4",
"url": "https://osv.dev/vulnerability/CVE-2026-86738",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Snipe-IT before 8.7.0 CSS Injection via Custom CSS",
"summary": "Snipe-IT versions before 8.7.0 contain a CSS injection vulnerability in the Custom CSS field due to incomplete sanitization that reverses HTML encoding on greater-than and double-quote characters. Superusers can plant malicious CSS payloads using @import and url() references to exfiltrate CSRF tokens from other superusers via attribute-selector rules, enabling account takeover.",
"evidence": "osv:CVE-2026-86738",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2026-86738",
"aliases": [
"CVE-2026-86738",
"GHSA-pvcw-mp8q-mj39"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/grokability/snipe-it",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "1d05a7ce11e6bf9448c067ac3ffbe5e63882888e"
},
{
"fixed": "d26d71688359707f3b257fc04fe6c3e5a17405f9"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:snipeitapp:snipe-it:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.0.0"
},
{
"fixed": "8.7.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "d26d71688359707f3b257fc04fe6c3e5a17405f9"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"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-2026-86738.json"
}
}
],
"modified": "2026-10-28T02:30:34.911624759Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86738.json",
"https://github.com/grokability/snipe-it/security/advisories/GHSA-pvcw-mp8q-mj39",
"https://nvd.nist.gov/vuln/detail/CVE-2026-86738",
"https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-css-injection-via-custom-css",
"https://github.com/grokability/snipe-it/commit/d26d71688359707f3b257fc04fe6c3e5a17405f9"
],
"provider_metadata": {
"cwe_ids": [
"CWE-79"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86738.json"
}
},
"related_cves": [
{
"value": "CVE-2026-86738",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 502257,
"published_at": "2026-09-08T15:14:06.446+00:00"
}