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vuln-cve/data/2026/43xxx/CVE-2026-43924.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-43924",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-05-04T16:59:09.089Z",
"datePublished": "2026-06-03T19:56:25.836Z",
"dateUpdated": "2026-06-04T12:37:01.016Z"
},
"containers": {
"cna": {
"title": "FOSSBilling has an open redirect via administrator-configured redirect targets",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-601",
"lang": "en",
"description": "CWE-601: URL Redirection to Untrusted Site ('Open Redirect')",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "HIGH",
"userInteraction": "PASSIVE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "LOW",
"subAvailabilityImpact": "NONE",
"baseScore": 4.8,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-v8rf-g37v-vgpx",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-v8rf-g37v-vgpx"
},
{
"name": "https://github.com/FOSSBilling/FOSSBilling/releases/tag/0.8.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/FOSSBilling/FOSSBilling/releases/tag/0.8.0"
}
],
"affected": [
{
"vendor": "FOSSBilling",
"product": "FOSSBilling",
"versions": [
{
"version": "< 0.8.0",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-06-03T19:56:25.836Z"
},
"descriptions": [
{
"lang": "en",
"value": "FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, the Redirect module does not validate the URL scheme of administrator-configured destination URLs before storing or issuing redirects. This allows arbitrary external URLs to be configured as redirect targets, creating an open redirect vulnerability exploitable for phishing attacks. Users following a legitimate FOSSBilling URL can be silently redirected to an attacker-controlled external site. The redirect is issued as a 301 (Moved Permanently) response, which browsers cache persistently, amplifying the impact. Exploitation requires administrator privileges to create or modify redirect entries, limiting practical attack scenarios to multi-admin environments or compromised admin accounts. Version 0.8.0 fixes the issue. Some workarounds are available. Restrict admin access to the Redirect module to trusted administrators only and/or audit existing redirect entries in the database (the `extension_meta` table with `extension = 'mod_redirect'`) for any unexpected or external target URLs."
}
],
"source": {
"advisory": "GHSA-v8rf-g37v-vgpx",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-06-04T12:36:50.988014Z",
"id": "CVE-2026-43924",
"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": "2026-06-04T12:37:01.016Z"
}
}
]
}
}