CVE-2026-30940 (GCVE-0-2026-30940)
Vulnerability from cvelistv5
Published
2026-03-31 00:45
Modified
2026-04-02 14:46
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
baserCMS is a website development framework. Prior to version 5.2.3, a path traversal vulnerability exists in the theme file management API (/baser/api/admin/bc-theme-file/theme_files/add.json) that allows arbitrary file write. An authenticated administrator can include ../ sequences in the path parameter to create a PHP file in an arbitrary directory outside the theme directory, which may result in remote code execution (RCE). This issue has been patched in version 5.2.3.
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| baserproject | basercms |
Version: < 5.2.3 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-30940",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-02T14:46:24.039682Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-02T14:46:54.107Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "basercms",
"vendor": "baserproject",
"versions": [
{
"status": "affected",
"version": "\u003c 5.2.3"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "baserCMS is a website development framework. Prior to version 5.2.3, a path traversal vulnerability exists in the theme file management API (/baser/api/admin/bc-theme-file/theme_files/add.json) that allows arbitrary file write. An authenticated administrator can include ../ sequences in the path parameter to create a PHP file in an arbitrary directory outside the theme directory, which may result in remote code execution (RCE). This issue has been patched in version 5.2.3."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-73",
"description": "CWE-73: External Control of File Name or Path",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-31T00:45:35.177Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/baserproject/basercms/security/advisories/GHSA-c5c6-37vq-pjcq",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/baserproject/basercms/security/advisories/GHSA-c5c6-37vq-pjcq"
},
{
"name": "https://basercms.net/security/JVN_20837860",
"tags": [
"x_refsource_MISC"
],
"url": "https://basercms.net/security/JVN_20837860"
},
{
"name": "https://github.com/baserproject/basercms/releases/tag/5.2.3",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/baserproject/basercms/releases/tag/5.2.3"
}
],
"source": {
"advisory": "GHSA-c5c6-37vq-pjcq",
"discovery": "UNKNOWN"
},
"title": "baserCMS: Path Traversal in Theme File API Leads to Arbitrary File Write and RCE"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-30940",
"datePublished": "2026-03-31T00:45:35.177Z",
"dateReserved": "2026-03-07T17:34:39.978Z",
"dateUpdated": "2026-04-02T14:46:54.107Z",
"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-2026-30940\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-02T14:46:24.039682Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-02T14:46:39.387Z\"}}], \"cna\": {\"title\": \"baserCMS: Path Traversal in Theme File API Leads to Arbitrary File Write and RCE\", \"source\": {\"advisory\": \"GHSA-c5c6-37vq-pjcq\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.2, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"baserproject\", \"product\": \"basercms\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 5.2.3\"}]}], \"references\": [{\"url\": \"https://github.com/baserproject/basercms/security/advisories/GHSA-c5c6-37vq-pjcq\", \"name\": \"https://github.com/baserproject/basercms/security/advisories/GHSA-c5c6-37vq-pjcq\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://basercms.net/security/JVN_20837860\", \"name\": \"https://basercms.net/security/JVN_20837860\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/baserproject/basercms/releases/tag/5.2.3\", \"name\": \"https://github.com/baserproject/basercms/releases/tag/5.2.3\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"baserCMS is a website development framework. Prior to version 5.2.3, a path traversal vulnerability exists in the theme file management API (/baser/api/admin/bc-theme-file/theme_files/add.json) that allows arbitrary file write. An authenticated administrator can include ../ sequences in the path parameter to create a PHP file in an arbitrary directory outside the theme directory, which may result in remote code execution (RCE). This issue has been patched in version 5.2.3.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-22\", \"description\": \"CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-73\", \"description\": \"CWE-73: External Control of File Name or Path\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-03-31T00:45:35.177Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-30940\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-02T14:46:54.107Z\", \"dateReserved\": \"2026-03-07T17:34:39.978Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-03-31T00:45:35.177Z\", \"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…