High
Cross-site Scripting (XSS) when pasting HTML into the rich text editor in Joplin
Type: advisorySources: OSV
Joplin is a free, open source note taking and to-do application. A Cross-site Scripting (XSS) vulnerability allows pasting untrusted data into the rich text editor to execute arbitrary code. HTML pasted into the rich text editor is not sanitized (or not sanitized properly). As such, the `onload` attribute of pasted images can execute arbitrary code. Because the TinyMCE editor frame does not use the `sandbox` attribute, such scripts can access NodeJS's `require` through the `top` variable. From this, an attacker can run arbitrary commands. This issue has been addressed in version 2.12.10 and users are advised to upgrade. There are no known workarounds for this vulnerability.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2023-38506
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 19:20 UTC · Revision 1
Source evidence
Cross-site Scripting (XSS) when pasting HTML into the rich text editor in Joplin
core-osv · Original sourcePublished 21 Jun 2024, 19:43 UTC
Joplin is a free, open source note taking and to-do application. A Cross-site Scripting (XSS) vulnerability allows pasting untrusted data into the rich text editor to execute arbitrary code. HTML pasted into the rich text editor is not sanitized (or not sanitized properly). As such, the `onload` attribute of pasted images can execute arbitrary code. Because the TinyMCE editor frame does not use the `sandbox` attribute, such scripts can access NodeJS's `require` through the `top` variable. From this, an attacker can run arbitrary commands. This issue has been addressed in version 2.12.10 and users are advised to upgrade. There are no known workarounds for this vulnerability.
osv:CVE-2023-38506
Complete source record
{
"id": "3b90ca787f146098a2fd687bb19d34b2682c066023e8a58214d12f0deb9970ad",
"url": "https://osv.dev/vulnerability/CVE-2023-38506",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Cross-site Scripting (XSS) when pasting HTML into the rich text editor in Joplin",
"summary": "Joplin is a free, open source note taking and to-do application. A Cross-site Scripting (XSS) vulnerability allows pasting untrusted data into the rich text editor to execute arbitrary code. HTML pasted into the rich text editor is not sanitized (or not sanitized properly). As such, the `onload` attribute of pasted images can execute arbitrary code. Because the TinyMCE editor frame does not use the `sandbox` attribute, such scripts can access NodeJS's `require` through the `top` variable. From this, an attacker can run arbitrary commands. This issue has been addressed in version 2.12.10 and users are advised to upgrade. There are no known workarounds for this vulnerability.",
"evidence": "osv:CVE-2023-38506",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2023-38506",
"aliases": [
"CVE-2023-38506",
"GHSA-m59c-9rrj-c399"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/laurent22/joplin",
"type": "GIT",
"events": [
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{
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"database_specific": {
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{
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],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
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{
"cpe": "cpe:2.3:a:joplin_project:joplin:*:*:*:*:*:-:*:*",
"range": [
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-38506.json"
}
}
],
"modified": "2026-10-28T02:30:38.722638120Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/38xxx/CVE-2023-38506.json",
"https://github.com/laurent22/joplin/security/advisories/GHSA-m59c-9rrj-c399",
"https://nvd.nist.gov/vuln/detail/CVE-2023-38506"
],
"provider_metadata": {
"cwe_ids": [
"CWE-79"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/38xxx/CVE-2023-38506.json"
}
},
"related_cves": [
{
"value": "CVE-2023-38506",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 506101,
"published_at": "2024-06-21T19:43:24.161+00:00"
}