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vuln-cve/data/2026/42xxx/CVE-2026-42604.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-42604",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-04-29T00:31:15.725Z",
"datePublished": "2026-06-12T18:42:38.346Z",
"dateUpdated": "2026-06-15T13:10:30.083Z"
},
"containers": {
"cna": {
"title": "Actual has an OpenID `client_secret` Disclosure via Broken Authorization Guard in `/openid/config`",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-863",
"lang": "en",
"description": "CWE-863: Incorrect Authorization",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/actualbudget/actual/security/advisories/GHSA-49v6-pqjq-xw55",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/actualbudget/actual/security/advisories/GHSA-49v6-pqjq-xw55"
},
{
"name": "https://actualbudget.org/blog/release-26.5.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://actualbudget.org/blog/release-26.5.0"
}
],
"affected": [
{
"vendor": "actualbudget",
"product": "actual",
"versions": [
{
"version": "< 26.5.0",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-06-12T18:42:38.346Z"
},
"descriptions": [
{
"lang": "en",
"value": "Actual is a local-first personal finance tool. The `POST /openid/config` endpoint in Actual Budget's sync-server versions <= 26.4.0 exposes the full OpenID Connect configuration—including the OAuth2 `client_secret`—to any caller who knows the bootstrap password. The endpoint also lacks authentication and rate limiting, making the bootstrap password brute-forceable. Version 26.5.0 fixes the issue."
}
],
"source": {
"advisory": "GHSA-49v6-pqjq-xw55",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-06-15T13:10:20.281043Z",
"id": "CVE-2026-42604",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-06-15T13:10:30.083Z"
}
}
]
}
}