Low
EspoCRM: Persistent XSS via CSP nonce injection in applicationName setting by admin user
Type: advisorySources: OSV
EspoCRM is an open source customer relationship management application. Prior to 9.3.9, an authenticated administrator can place crafted content in the applicationName setting through CSP nonce injection. The persistent injection is inserted into the main application page without escaping, allowing attacker-controlled JavaScript to run in users' sessions and leak page data, including unsaved user input. This issue is fixed in version 9.3.9.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-53575
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 6 Nov 2026, 02:19 UTC · Revision 1
Source evidence
EspoCRM: Persistent XSS via CSP nonce injection in applicationName setting by admin user
core-osv · Original sourcePublished 15 Oct 2026, 14:47 UTC
EspoCRM is an open source customer relationship management application. Prior to 9.3.9, an authenticated administrator can place crafted content in the applicationName setting through CSP nonce injection. The persistent injection is inserted into the main application page without escaping, allowing attacker-controlled JavaScript to run in users' sessions and leak page data, including unsaved user input. This issue is fixed in version 9.3.9.
osv:CVE-2026-53575
Complete source record
{
"id": "edb19e8d94966f46bdd97c0088332346eb3f968dd4d2e65c4e896d71eb3df551",
"url": "https://osv.dev/vulnerability/CVE-2026-53575",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "EspoCRM: Persistent XSS via CSP nonce injection in applicationName setting by admin user",
"summary": "EspoCRM is an open source customer relationship management application. Prior to 9.3.9, an authenticated administrator can place crafted content in the applicationName setting through CSP nonce injection. The persistent injection is inserted into the main application page without escaping, allowing attacker-controlled JavaScript to run in users' sessions and leak page data, including unsaved user input. This issue is fixed in version 9.3.9.",
"evidence": "osv:CVE-2026-53575",
"products": [],
"severity": "low",
"structured": {
"id": "CVE-2026-53575",
"aliases": [
"CVE-2026-53575",
"GHSA-f34h-xxmv-j9xp"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/espocrm/espocrm",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "07653eb9be71f2663a2e2818647f2729433ebd34"
},
{
"fixed": "ce73338ea7b463914e1271f16f8f73131ace886f"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "9.3.9"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "ce73338ea7b463914e1271f16f8f73131ace886f"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "07653eb9be71f2663a2e2818647f2729433ebd34"
}
],
"source": "REFERENCES_TAG",
"original_tag": "9.3.9"
}
]
}
}
],
"versions": [
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53575.json"
}
}
],
"modified": "2026-10-28T02:30:45.982552166Z",
"provider": "osv",
"references": [
"https://github.com/espocrm/espocrm/releases/tag/9.3.9",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53575.json",
"https://github.com/espocrm/espocrm/security/advisories/GHSA-f34h-xxmv-j9xp",
"https://nvd.nist.gov/vuln/detail/CVE-2026-53575",
"https://github.com/espocrm/espocrm/commit/ce73338ea7b463914e1271f16f8f73131ace886f"
],
"provider_metadata": {
"cwe_ids": [
"CWE-79"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53575.json"
}
},
"related_cves": [
{
"value": "CVE-2026-53575",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 514221,
"published_at": "2026-10-15T14:47:19.494+00:00"
}