CVE-2026-88976 (GCVE-0-2026-88976)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:11 – Updated: 2026-09-16 15:25
VLAI
EPSS
VEX
Title
@platejs/core HTML deserialization can trigger browser behavior during parsing
Summary
Plate is a rich-text editor with AI and shadcn/ui. Prior to 53.3.11, and in the discontinued 54.0.0-beta.0 through 54.0.0-beta.1 builds, Plate core HTML deserialization APIs parse supplied HTML strings in the active document. When an application passes untrusted or cross-user HTML to these APIs, certain HTML attributes can trigger browser behavior before the HTML is converted into editor nodes. This can allow attacker-controlled script to execute in the consuming application's origin when another user loads the deserialized content. This issue is fixed in version 53.3.11.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 15:24 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/udecode/plate/security/advisor… | x_refsource_CONFIRM |
| https://github.com/udecode/plate/pull/5117 | x_refsource_MISC |
| https://github.com/udecode/plate/commit/d02afe45d… | x_refsource_MISC |
| https://github.com/udecode/plate/releases/tag/v53.3.11 | x_refsource_MISC |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-88976",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-16T15:24:04.653416Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-16T15:25:38.481Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "plate",
"vendor": "udecode",
"versions": [
{
"status": "affected",
"version": "\u003c 53.3.11"
},
{
"status": "affected",
"version": "\u003e= 54.0.0-beta.0, \u003c= 54.0.0-beta.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Plate is a rich-text editor with AI and shadcn/ui. Prior to 53.3.11, and in the discontinued 54.0.0-beta.0 through 54.0.0-beta.1 builds, Plate core HTML deserialization APIs parse supplied HTML strings in the active document. When an application passes untrusted or cross-user HTML to these APIs, certain HTML attributes can trigger browser behavior before the HTML is converted into editor nodes. This can allow attacker-controlled script to execute in the consuming application\u0027s origin when another user loads the deserialized content. This issue is fixed in version 53.3.11."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-16T14:11:39.881Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/udecode/plate/security/advisories/GHSA-qrfj-mgw8-j9c6",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/udecode/plate/security/advisories/GHSA-qrfj-mgw8-j9c6"
},
{
"name": "https://github.com/udecode/plate/pull/5117",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/udecode/plate/pull/5117"
},
{
"name": "https://github.com/udecode/plate/commit/d02afe45d5ec3a9fb95e0745bc5820ff18a3c12b",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/udecode/plate/commit/d02afe45d5ec3a9fb95e0745bc5820ff18a3c12b"
},
{
"name": "https://github.com/udecode/plate/releases/tag/v53.3.11",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/udecode/plate/releases/tag/v53.3.11"
}
],
"source": {
"advisory": "GHSA-qrfj-mgw8-j9c6",
"discovery": "UNKNOWN"
},
"title": "@platejs/core HTML deserialization can trigger browser behavior during parsing"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-88976",
"datePublished": "2026-09-16T14:11:39.881Z",
"dateReserved": "2026-09-10T16:02:31.342Z",
"dateUpdated": "2026-09-16T15:25:38.481Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-88976",
"date": "2026-09-23",
"epss": "0.00253",
"percentile": "0.17093"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "plate",
"vendor": "udecode",
"versions": [
{
"status": "affected",
"version": "\u003c 53.3.11"
},
{
"status": "affected",
"version": "\u003e= 54.0.0-beta.0, \u003c= 54.0.0-beta.1"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Plate is a rich-text editor with AI and shadcn/ui. Prior to 53.3.11, and in the discontinued 54.0.0-beta.0 through 54.0.0-beta.1 builds, Plate core HTML deserialization APIs parse supplied HTML strings in the active document. When an application passes untrusted or cross-user HTML to these APIs, certain HTML attributes can trigger browser behavior before the HTML is converted into editor nodes. This can allow attacker-controlled script to execute in the consuming application\u0027s origin when another user loads the deserialized content. This issue is fixed in version 53.3.11."
}
],
"id": "CVE-2026-88976",
"lastModified": "2026-09-16T16:17:20.227",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 2.7,
"source": "security-advisories@github.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-88976",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-16T15:24:04.653416Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-09-16T15:18:05.850",
"references": [
{
"source": "security-advisories@github.com",
"url": "https://github.com/udecode/plate/commit/d02afe45d5ec3a9fb95e0745bc5820ff18a3c12b"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/udecode/plate/pull/5117"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/udecode/plate/releases/tag/v53.3.11"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/udecode/plate/security/advisories/GHSA-qrfj-mgw8-j9c6"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-79"
}
],
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-88976",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-16T15:24:04.653416Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-16T15:24:13.346Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "plate",
"vendor": "udecode",
"versions": [
{
"status": "affected",
"version": "\u003c 53.3.11"
},
{
"status": "affected",
"version": "\u003e= 54.0.0-beta.0, \u003c= 54.0.0-beta.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Plate is a rich-text editor with AI and shadcn/ui. Prior to 53.3.11, and in the discontinued 54.0.0-beta.0 through 54.0.0-beta.1 builds, Plate core HTML deserialization APIs parse supplied HTML strings in the active document. When an application passes untrusted or cross-user HTML to these APIs, certain HTML attributes can trigger browser behavior before the HTML is converted into editor nodes. This can allow attacker-controlled script to execute in the consuming application\u0027s origin when another user loads the deserialized content. This issue is fixed in version 53.3.11."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-16T14:11:39.881Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/udecode/plate/security/advisories/GHSA-qrfj-mgw8-j9c6",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/udecode/plate/security/advisories/GHSA-qrfj-mgw8-j9c6"
},
{
"name": "https://github.com/udecode/plate/pull/5117",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/udecode/plate/pull/5117"
},
{
"name": "https://github.com/udecode/plate/commit/d02afe45d5ec3a9fb95e0745bc5820ff18a3c12b",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/udecode/plate/commit/d02afe45d5ec3a9fb95e0745bc5820ff18a3c12b"
},
{
"name": "https://github.com/udecode/plate/releases/tag/v53.3.11",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/udecode/plate/releases/tag/v53.3.11"
}
],
"source": {
"advisory": "GHSA-qrfj-mgw8-j9c6",
"discovery": "UNKNOWN"
},
"title": "@platejs/core HTML deserialization can trigger browser behavior during parsing"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-88976",
"datePublished": "2026-09-16T14:11:39.881Z",
"dateReserved": "2026-09-10T16:02:31.342Z",
"dateUpdated": "2026-09-16T15:25:38.481Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…