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vuln-cve/data/2026/23xxx/CVE-2026-23891.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-23891",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-01-16T21:02:02.902Z",
"datePublished": "2026-04-13T16:52:16.448Z",
"dateUpdated": "2026-04-14T16:29:24.311Z"
},
"containers": {
"cna": {
"title": "Decidim has a Cross-site scripting (XSS) vulnerability via user name field",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"lang": "en",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "LOW",
"userInteraction": "PASSIVE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "LOW",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"subAvailabilityImpact": "LOW",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/decidim/decidim/security/advisories/GHSA-fc46-r95f-hq7g",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/decidim/decidim/security/advisories/GHSA-fc46-r95f-hq7g"
},
{
"name": "https://github.com/decidim/decidim/releases/tag/v0.30.5",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/decidim/decidim/releases/tag/v0.30.5"
},
{
"name": "https://github.com/decidim/decidim/releases/tag/v0.31.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/decidim/decidim/releases/tag/v0.31.1"
}
],
"affected": [
{
"vendor": "decidim",
"product": "decidim",
"versions": [
{
"version": ">= 0.31.0.rc1, < 0.31.1",
"status": "affected"
},
{
"version": "< 0.30.5",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-04-13T16:52:16.448Z"
},
"descriptions": [
{
"lang": "en",
"value": "Decidim is a participatory democracy framework. In versions below 0.30.5 and 0.31.0.rc1 through 0.31.0, a stored code execution vulnerability in the user name field allows a low-privileged attacker to execute arbitrary code in the context of any user who passively visits a comment page, resulting in high confidentiality and integrity impact across security boundaries. This issue has been fixed in versions 0.30.5 and 0.31.1."
}
],
"source": {
"advisory": "GHSA-fc46-r95f-hq7g",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-04-14T15:23:47.437196Z",
"id": "CVE-2026-23891",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-04-14T16:29:24.311Z"
}
}
]
}
}