CVE-2026-28781 (GCVE-0-2026-28781)
Vulnerability from cvelistv5
Published
2026-03-04 16:31
Modified
2026-03-04 17:36
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Craft is a content management system (CMS). Prior to 4.17.0-beta.1 and 5.9.0-beta.1, the entry creation process allows for Mass Assignment of the authorId attribute. A user with "Create Entries" permission can inject the authorIds[] (or authorId) parameter into the POST request, which the backend processes without verifying if the current user is authorized to assign authorship to others. Normally, this field is not present in the request for users without the necessary permissions. By manually adding this parameter, an attacker can attribute the new entry to any user, including Admins. This effectively "spoofs" the authorship. This vulnerability is fixed in 4.17.0-beta.1 and 5.9.0-beta.1.
References
| URL | Tags | |
|---|---|---|
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-28781",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-04T17:36:36.759532Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-04T17:36:52.722Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "cms",
"vendor": "craftcms",
"versions": [
{
"status": "affected",
"version": "\u003e= 5.0.0-RC1, \u003c 5.9.0-beta.1"
},
{
"status": "affected",
"version": "\u003e= 4.0.0-RC1, \u003c 4.17.0-beta.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Craft is a content management system (CMS). Prior to 4.17.0-beta.1 and 5.9.0-beta.1, the entry creation process allows for Mass Assignment of the authorId attribute. A user with \"Create Entries\" permission can inject the authorIds[] (or authorId) parameter into the POST request, which the backend processes without verifying if the current user is authorized to assign authorship to others. Normally, this field is not present in the request for users without the necessary permissions. By manually adding this parameter, an attacker can attribute the new entry to any user, including Admins. This effectively \"spoofs\" the authorship. This vulnerability is fixed in 4.17.0-beta.1 and 5.9.0-beta.1."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"privilegesRequired": "LOW",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-639",
"description": "CWE-639: Authorization Bypass Through User-Controlled Key",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-915",
"description": "CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-04T16:31:39.357Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/craftcms/cms/security/advisories/GHSA-2xfc-g69j-x2mp",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/craftcms/cms/security/advisories/GHSA-2xfc-g69j-x2mp"
},
{
"name": "https://github.com/craftcms/cms/commit/830b403870cd784b47ae42a3f5a16e7ac2d7f5a8",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/craftcms/cms/commit/830b403870cd784b47ae42a3f5a16e7ac2d7f5a8"
},
{
"name": "https://github.com/craftcms/cms/commit/c6dcbdffaf6ab3ffe77d317336684d83699f4542",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/craftcms/cms/commit/c6dcbdffaf6ab3ffe77d317336684d83699f4542"
}
],
"source": {
"advisory": "GHSA-2xfc-g69j-x2mp",
"discovery": "UNKNOWN"
},
"title": "Craft Affected by Entries Authorship Spoofing via Mass Assignment"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-28781",
"datePublished": "2026-03-04T16:31:39.357Z",
"dateReserved": "2026-03-03T14:25:19.244Z",
"dateUpdated": "2026-03-04T17:36:52.722Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-28781\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-03-04T17:36:36.759532Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-03-04T17:36:48.255Z\"}}], \"cna\": {\"title\": \"Craft Affected by Entries Authorship Spoofing via Mass Assignment\", \"source\": {\"advisory\": \"GHSA-2xfc-g69j-x2mp\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 7.1, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"LOW\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"craftcms\", \"product\": \"cms\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 5.0.0-RC1, \u003c 5.9.0-beta.1\"}, {\"status\": \"affected\", \"version\": \"\u003e= 4.0.0-RC1, \u003c 4.17.0-beta.1\"}]}], \"references\": [{\"url\": \"https://github.com/craftcms/cms/security/advisories/GHSA-2xfc-g69j-x2mp\", \"name\": \"https://github.com/craftcms/cms/security/advisories/GHSA-2xfc-g69j-x2mp\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/craftcms/cms/commit/830b403870cd784b47ae42a3f5a16e7ac2d7f5a8\", \"name\": \"https://github.com/craftcms/cms/commit/830b403870cd784b47ae42a3f5a16e7ac2d7f5a8\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/craftcms/cms/commit/c6dcbdffaf6ab3ffe77d317336684d83699f4542\", \"name\": \"https://github.com/craftcms/cms/commit/c6dcbdffaf6ab3ffe77d317336684d83699f4542\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Craft is a content management system (CMS). Prior to 4.17.0-beta.1 and 5.9.0-beta.1, the entry creation process allows for Mass Assignment of the authorId attribute. A user with \\\"Create Entries\\\" permission can inject the authorIds[] (or authorId) parameter into the POST request, which the backend processes without verifying if the current user is authorized to assign authorship to others. Normally, this field is not present in the request for users without the necessary permissions. By manually adding this parameter, an attacker can attribute the new entry to any user, including Admins. This effectively \\\"spoofs\\\" the authorship. This vulnerability is fixed in 4.17.0-beta.1 and 5.9.0-beta.1.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-639\", \"description\": \"CWE-639: Authorization Bypass Through User-Controlled Key\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-915\", \"description\": \"CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-03-04T16:31:39.357Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-28781\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-04T17:36:52.722Z\", \"dateReserved\": \"2026-03-03T14:25:19.244Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-03-04T16:31:39.357Z\", \"assignerShortName\": \"GitHub_M\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…