Medium
Cross-site scripting vulnerability in TinyMCE
Type: advisorySources: OSV
TinyMCE versions before 5.9.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and remote attacker could insert crafted HTML into the editor resulting in arbitrary JavaScript execution in another user's browser.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2024-21908
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 12:25 UTC · Revision 1
Source evidence
Cross-site scripting vulnerability in TinyMCE
core-osv · Original sourcePublished 3 Jan 2024, 15:38 UTC
TinyMCE versions before 5.9.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and remote attacker could insert crafted HTML into the editor resulting in arbitrary JavaScript execution in another user's browser.
osv:CVE-2024-21908
Complete source record
{
"id": "41af520e76ce7b1edfc47d1851628af972aed9cddfb2d58cbb0ebb6fadc30da0",
"url": "https://osv.dev/vulnerability/CVE-2024-21908",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Cross-site scripting vulnerability in TinyMCE",
"summary": "TinyMCE versions before 5.9.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and remote attacker could insert crafted HTML into the editor resulting in arbitrary JavaScript execution in another user's browser.",
"evidence": "osv:CVE-2024-21908",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2024-21908",
"aliases": [
"CVE-2024-21908",
"GHSA-5h9g-x5rv-25wg"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/tinymce/tinymce",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "983565fa9b0b3718ffe6b5e70504bd3451af634d"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "5.9.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"cpe": "cpe:2.3:a:tiny:tinymce:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "5.9.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-21908.json"
}
}
],
"modified": "2026-10-28T02:30:50.693794775Z",
"provider": "osv",
"references": [
"https://nuget.org/packages",
"https://www.tiny.cloud/docs/release-notes/release-notes59/#securityfixes",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/21xxx/CVE-2024-21908.json",
"https://github.com/advisories/GHSA-5h9g-x5rv-25wg",
"https://github.com/tinymce/tinymce/security/advisories/GHSA-5h9g-x5rv-25wg",
"https://nvd.nist.gov/vuln/detail/CVE-2024-21908",
"https://vulncheck.com/advisories/vc-advisory-GHSA-5h9g-x5rv-25wg"
],
"provider_metadata": {
"cwe_ids": [
"CWE-79"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/21xxx/CVE-2024-21908.json"
}
},
"related_cves": [
{
"value": "CVE-2024-21908",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 519280,
"published_at": "2024-01-03T15:38:09.664+00:00"
}