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2 vulnerabilities found for web-components by @tinacms
CVE-2026-108260 (GCVE-0-2026-108260)
Vulnerability from nvd – Published: 2026-10-09 20:40 – Updated: 2026-10-09 20:40
VLAI
EPSS
VEX
Title
@tinacms/web-components: `tina-markdown` writes rich-text link URLs into `href` without scheme validation, allowing stored XSS
Summary
Tina is a headless content management system. Prior to 0.2.1, the tina-markdown element in packages/@tinacms/web-components/src/tina-markdown.js assigns a rich-text node.url value directly to an anchor href without validating the URL scheme. A content author can store a link using a script-capable scheme, and a visitor who clicks the rendered link executes attacker-controlled script in the site's origin. The script can access same-origin application data and, when the visitor is an editor or administrator, may expose credentials stored by the TinaCMS admin on that origin. This issue is fixed in version 0.2.1.
Severity
7.6 (High)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/tinacms/tinacms/security/advis… | x_refsource_CONFIRM |
| https://github.com/tinacms/tinacms/pull/7523 | x_refsource_MISC |
| https://github.com/tinacms/tinacms/commit/5295e07… | x_refsource_MISC |
| https://github.com/tinacms/tinacms/releases/tag/@… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| tinacms | tinacms |
Affected:
< 3.14.0
|
|
| @tinacms | web-components |
Affected:
< 0.2.1
|
{
"containers": {
"cna": {
"affected": [
{
"product": "tinacms",
"vendor": "tinacms",
"versions": [
{
"status": "affected",
"version": "\u003c 3.14.0"
}
]
},
{
"product": "web-components",
"vendor": "@tinacms",
"versions": [
{
"status": "affected",
"version": "\u003c 0.2.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Tina is a headless content management system. Prior to 0.2.1, the tina-markdown element in packages/@tinacms/web-components/src/tina-markdown.js assigns a rich-text node.url value directly to an anchor href without validating the URL scheme. A content author can store a link using a script-capable scheme, and a visitor who clicks the rendered link executes attacker-controlled script in the site\u0027s origin. The script can access same-origin application data and, when the visitor is an editor or administrator, may expose credentials stored by the TinaCMS admin on that origin. This issue is fixed in version 0.2.1."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/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"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-83",
"description": "CWE-83: Improper Neutralization of Script in Attributes in a Web Page",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-09T20:40:37.228Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg"
},
{
"name": "https://github.com/tinacms/tinacms/pull/7523",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/tinacms/tinacms/pull/7523"
},
{
"name": "https://github.com/tinacms/tinacms/commit/5295e077f0d279c35686a0e481a15e33a4877e3b",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/tinacms/tinacms/commit/5295e077f0d279c35686a0e481a15e33a4877e3b"
},
{
"name": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/web-components@0.2.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/web-components@0.2.1"
}
],
"source": {
"advisory": "GHSA-c42q-qvc3-j6vg",
"discovery": "UNKNOWN"
},
"title": "@tinacms/web-components: `tina-markdown` writes rich-text link URLs into `href` without scheme validation, allowing stored XSS"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-108260",
"datePublished": "2026-10-09T20:40:37.228Z",
"dateReserved": "2026-10-09T17:33:15.409Z",
"dateUpdated": "2026-10-09T20:40:37.228Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-108260 (GCVE-0-2026-108260)
Vulnerability from cvelistv5 – Published: 2026-10-09 20:40 – Updated: 2026-10-09 20:40
VLAI
EPSS
VEX
Title
@tinacms/web-components: `tina-markdown` writes rich-text link URLs into `href` without scheme validation, allowing stored XSS
Summary
Tina is a headless content management system. Prior to 0.2.1, the tina-markdown element in packages/@tinacms/web-components/src/tina-markdown.js assigns a rich-text node.url value directly to an anchor href without validating the URL scheme. A content author can store a link using a script-capable scheme, and a visitor who clicks the rendered link executes attacker-controlled script in the site's origin. The script can access same-origin application data and, when the visitor is an editor or administrator, may expose credentials stored by the TinaCMS admin on that origin. This issue is fixed in version 0.2.1.
Severity
7.6 (High)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/tinacms/tinacms/security/advis… | x_refsource_CONFIRM |
| https://github.com/tinacms/tinacms/pull/7523 | x_refsource_MISC |
| https://github.com/tinacms/tinacms/commit/5295e07… | x_refsource_MISC |
| https://github.com/tinacms/tinacms/releases/tag/@… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| tinacms | tinacms |
Affected:
< 3.14.0
|
|
| @tinacms | web-components |
Affected:
< 0.2.1
|
{
"containers": {
"cna": {
"affected": [
{
"product": "tinacms",
"vendor": "tinacms",
"versions": [
{
"status": "affected",
"version": "\u003c 3.14.0"
}
]
},
{
"product": "web-components",
"vendor": "@tinacms",
"versions": [
{
"status": "affected",
"version": "\u003c 0.2.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Tina is a headless content management system. Prior to 0.2.1, the tina-markdown element in packages/@tinacms/web-components/src/tina-markdown.js assigns a rich-text node.url value directly to an anchor href without validating the URL scheme. A content author can store a link using a script-capable scheme, and a visitor who clicks the rendered link executes attacker-controlled script in the site\u0027s origin. The script can access same-origin application data and, when the visitor is an editor or administrator, may expose credentials stored by the TinaCMS admin on that origin. This issue is fixed in version 0.2.1."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/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"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-83",
"description": "CWE-83: Improper Neutralization of Script in Attributes in a Web Page",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-09T20:40:37.228Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg"
},
{
"name": "https://github.com/tinacms/tinacms/pull/7523",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/tinacms/tinacms/pull/7523"
},
{
"name": "https://github.com/tinacms/tinacms/commit/5295e077f0d279c35686a0e481a15e33a4877e3b",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/tinacms/tinacms/commit/5295e077f0d279c35686a0e481a15e33a4877e3b"
},
{
"name": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/web-components@0.2.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/web-components@0.2.1"
}
],
"source": {
"advisory": "GHSA-c42q-qvc3-j6vg",
"discovery": "UNKNOWN"
},
"title": "@tinacms/web-components: `tina-markdown` writes rich-text link URLs into `href` without scheme validation, allowing stored XSS"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-108260",
"datePublished": "2026-10-09T20:40:37.228Z",
"dateReserved": "2026-10-09T17:33:15.409Z",
"dateUpdated": "2026-10-09T20:40:37.228Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}