CVE-2026-42604

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Source
https://cve.org/CVERecord?id=CVE-2026-42604
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42604.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-42604
Aliases
  • GHSA-49v6-pqjq-xw55
Published
2026-06-12T18:42:38.346Z
Modified
2026-07-15T01:49:13.280052394Z
Severity
  • 6.9 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
Actual has an OpenID `client_secret` Disclosure via Broken Authorization Guard in `/openid/config`
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42604.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/actualbudget/actual

Affected ranges

Type
GIT
Repo
https://github.com/actualbudget/actual
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
4c62e2a75d48deb06d45e7ed89a2b9ddfd187e3d
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "26.5.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v22.*
v22.12.9
v23.*
v23.1.12
v23.10.0
v23.11.0
v23.12.0
v23.2.5
v23.2.9
v23.3.0
v23.3.2
v23.4.0
v23.4.1
v23.4.2
v23.5.0
v23.6.0
v23.7.0
v23.7.1
v23.7.2
v23.8.0
v23.8.1
v23.9.0
v24.*
v24.1.0
v24.10.0
v24.11.0
v24.12.0
v24.2.0
v24.3.0
v24.4.0
v24.5.0
v24.6.0
v24.7.0
v24.8.0
v24.9.0
v25.*
v25.1.0
v25.10.0
v25.11.0
v25.12.0
v25.2.0
v25.3.0
v25.4.0
v25.5.0
v25.6.0
v25.6.1
v25.7.0
v25.7.1
v25.8.0
v25.9.0
v26.*
v26.1.0
v26.2.0
v26.3.0
v26.4.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42604.json"