CVE-2026-42604
Essential information
- Published
- 12/06/2026 22:16
- Modified
- 12/06/2026 20:16
- Author
- The MITRE Corporation
- Creator
- The MITRE Corporation
- CVSS
- 6.9 MEDIUM (v3) 9.1 CRITICAL (v4.0)
- CISA KEV
- No
- CWE
- CWE-863
- EPSS (First)
- P10.9% EPSS percentile: rank of this vulnerability versus all others. Higher percentile = more likely to be exploited. Learn more (score 0.00035)
- CVSS vector
-
—
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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
CVSS metrics
- Access vector
- —
- Access complexity
- —
- Authentication
- —
- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploitability
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- —
- Attack complexity
- —
- Privileges required
- —
- User interaction
- —
- Scope
- —
- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploit code maturity
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- Network
- Attack complexity
- Low
- Attack requirements
- Present
- Privileges required
- None
- User interaction
- None
- Confidentiality (V)
- High
- Confidentiality (S)
- None
- Integrity (V)
- High
- Integrity (S)
- None
- Availability (V)
- None
- Availability (S)
- None
- Exploit maturity
- UNREPORTED
Description
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.
NVD status
- Status
- Received — CVE has been recently published to the CVE List and has been received by the NVD.
- Source
- [email protected]
- NVD
- View on NVD
Affected products (CPE)
| Product | CPE |
|---|---|
| actual / budget | cpe:2.3:a:actual:budget:<26.4.0:*:*:*:*:*:*:* |
| actual / budget | cpe:2.3:a:actual:budget:26.5.0:*:*:*:*:*:*:* |