CVE-2026-109933
Otter Blocks < 3.2.8 - Contributor+ Stored XSS via Block Style Attributes
Unscored
The Otter Blocks WordPress plugin before 3.2.8 does not properly sanitize and escape user-supplied block styling values before writing them into an inline stylesheet, allowing users with contributor-level access and above to inject arbitrary web scripts that execute when any visitor, including administrators, views the affected post.
Assigner
WPScan
WPScan
Published
2026-10-23
2026-10-23
Updated
2026-10-23
2026-10-23
Reserved
2026-10-13
2026-10-13
Affected
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Otter Blocks | < 3.2.8 (affected)
others: unaffected |
References
- https://wpscan.com/vulnerability/a2a19770-9ee2-4164-9ea6-a882cf0085e9/ exploitvdb-entrytechnical-description
Full CVE JSON record (5.2)
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Otter Blocks",
"vendor": "Unknown",
"versions": [
{
"lessThan": "3.2.8",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Karthik Ramakrishnan"
},
{
"lang": "en",
"type": "coordinator",
"value": "WPScan"
}
],
"descriptions": [
{
"lang": "en",
"value": "The Otter Blocks WordPress plugin before 3.2.8 does not properly sanitize and escape user-supplied block styling values before writing them into an inline stylesheet, allowing users with contributor-level access and above to inject arbitrary web scripts that execute when any visitor, including administrators, views the affected post."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-79 Cross-Site Scripting (XSS)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-23T06:00:17.572Z",
"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"shortName": "WPScan"
},
"references": [
{
"tags": [
"exploit",
"vdb-entry",
"technical-description"
],
"url": "https://wpscan.com/vulnerability/a2a19770-9ee2-4164-9ea6-a882cf0085e9/"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Otter Blocks \u003c 3.2.8 - Contributor+ Stored XSS via Block Style Attributes",
"x_generator": {
"engine": "WPScan CVE Generator"
}
}
},
"cveMetadata": {
"assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"assignerShortName": "WPScan",
"cveId": "CVE-2026-109933",
"datePublished": "2026-10-23T06:00:17.572Z",
"dateReserved": "2026-10-13T11:14:40.742Z",
"dateUpdated": "2026-10-23T06:00:17.572Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}