CVE-2026-53468 (GCVE-0-2026-53468)
Vulnerability from cvelistv5 – Published: 2026-08-21 21:16 – Updated: 2026-08-24 19:38
VLAI
EPSS
VEX
Title
Typemill has Stored HTML Attribute Injection in Metadata Fields
Summary
Typemill is a flat-file, Markdown-based content management system designed for informational documentation websites. Versions prior to 2.23.0 are vulnerable to stored HTML attribute injection in the page metadata fields (`og:title` and `og:description`). An authenticated user with permission to modify page metadata can inject arbitrary HTML attributes into generated `<meta>` tags due to missing output encoding. Under certain browser or DOM interaction scenarios, this may lead to stored cross-site scripting (XSS). Version 2.23.0 fixes the issue.
Severity
4.6 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 19:38 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/typemill/typemill/security/adv… | x_refsource_CONFIRM |
| https://github.com/typemill/typemill/releases/tag… | x_refsource_MISC |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-53468",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-24T19:38:07.139955Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-24T19:38:32.055Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/typemill/typemill/security/advisories/GHSA-wg6r-jwmr-p7gr"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "typemill",
"vendor": "typemill",
"versions": [
{
"status": "affected",
"version": "\u003c 2.23.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Typemill is a flat-file, Markdown-based content management system designed for informational documentation websites. Versions prior to 2.23.0 are vulnerable to stored HTML attribute injection in the page metadata fields (`og:title` and `og:description`). An authenticated user with permission to modify page metadata can inject arbitrary HTML attributes into generated `\u003cmeta\u003e` tags due to missing output encoding. Under certain browser or DOM interaction scenarios, this may lead to stored cross-site scripting (XSS). Version 2.23.0 fixes the issue."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/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": "2026-08-21T21:16:07.987Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/typemill/typemill/security/advisories/GHSA-wg6r-jwmr-p7gr",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/typemill/typemill/security/advisories/GHSA-wg6r-jwmr-p7gr"
},
{
"name": "https://github.com/typemill/typemill/releases/tag/v2.23.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/typemill/typemill/releases/tag/v2.23.0"
}
],
"source": {
"advisory": "GHSA-wg6r-jwmr-p7gr",
"discovery": "UNKNOWN"
},
"title": "Typemill has Stored HTML Attribute Injection in Metadata Fields"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-53468",
"datePublished": "2026-08-21T21:16:07.987Z",
"dateReserved": "2026-06-09T16:31:21.496Z",
"dateUpdated": "2026-08-24T19:38:32.055Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-53468",
"date": "2026-11-04",
"epss": "0.00424",
"percentile": "0.36848"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "typemill",
"vendor": "typemill",
"versions": [
{
"status": "affected",
"version": "\u003c 2.23.0"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Typemill is a flat-file, Markdown-based content management system designed for informational documentation websites. Versions prior to 2.23.0 are vulnerable to stored HTML attribute injection in the page metadata fields (`og:title` and `og:description`). An authenticated user with permission to modify page metadata can inject arbitrary HTML attributes into generated `\u003cmeta\u003e` tags due to missing output encoding. Under certain browser or DOM interaction scenarios, this may lead to stored cross-site scripting (XSS). Version 2.23.0 fixes the issue."
},
{
"lang": "es",
"value": "Typemill es un sistema de gesti\u00f3n de contenido de archivo plano, basado en Markdown, dise\u00f1ado para sitios web de documentaci\u00f3n informativa. Las versiones anteriores a la 2.23.0 son vulnerables a la inyecci\u00f3n de atributos HTML almacenados en los campos de metadatos de la p\u00e1gina (\u0027og:title\u0027 y \u0027og:description\u0027). Un usuario autenticado con permiso para modificar los metadatos de la p\u00e1gina puede inyectar atributos HTML arbitrarios en las etiquetas \u0027\u003cmeta\u003e\u0027 generadas debido a la falta de codificaci\u00f3n de salida. Bajo ciertos escenarios de interacci\u00f3n del navegador o del DOM, esto puede conducir a cross-site scripting (XSS) almacenado. La versi\u00f3n 2.23.0 corrige el problema."
}
],
"id": "CVE-2026-53468",
"lastModified": "2026-10-14T19:10:00.297",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.1,
"impactScore": 2.5,
"source": "security-advisories@github.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-53468",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-24T19:38:07.139955Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-08-21T22:16:38.570",
"references": [
{
"source": "security-advisories@github.com",
"url": "https://github.com/typemill/typemill/releases/tag/v2.23.0"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/typemill/typemill/security/advisories/GHSA-wg6r-jwmr-p7gr"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"url": "https://github.com/typemill/typemill/security/advisories/GHSA-wg6r-jwmr-p7gr"
}
],
"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-2026-53468",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-24T19:38:07.139955Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-24T19:38:24.309Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/typemill/typemill/security/advisories/GHSA-wg6r-jwmr-p7gr"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "typemill",
"vendor": "typemill",
"versions": [
{
"status": "affected",
"version": "\u003c 2.23.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Typemill is a flat-file, Markdown-based content management system designed for informational documentation websites. Versions prior to 2.23.0 are vulnerable to stored HTML attribute injection in the page metadata fields (`og:title` and `og:description`). An authenticated user with permission to modify page metadata can inject arbitrary HTML attributes into generated `\u003cmeta\u003e` tags due to missing output encoding. Under certain browser or DOM interaction scenarios, this may lead to stored cross-site scripting (XSS). Version 2.23.0 fixes the issue."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/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": "2026-08-21T21:16:07.987Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/typemill/typemill/security/advisories/GHSA-wg6r-jwmr-p7gr",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/typemill/typemill/security/advisories/GHSA-wg6r-jwmr-p7gr"
},
{
"name": "https://github.com/typemill/typemill/releases/tag/v2.23.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/typemill/typemill/releases/tag/v2.23.0"
}
],
"source": {
"advisory": "GHSA-wg6r-jwmr-p7gr",
"discovery": "UNKNOWN"
},
"title": "Typemill has Stored HTML Attribute Injection in Metadata Fields"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-53468",
"datePublished": "2026-08-21T21:16:07.987Z",
"dateReserved": "2026-06-09T16:31:21.496Z",
"dateUpdated": "2026-08-24T19:38:32.055Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
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.