CVE-2026-42890
CVE-2026-42890 is a medium-severity vulnerability with a CVSS 4.0 base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.
Key facts
- Severity: Medium (CVSS 4.0 base score 4.8)
- EPSS exploit prediction: 0% (3rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-36547
- Weakness: CWE-94
- Published:
- Last modified:
Description
Actual is an open-source personal finance application. In the macOS desktop application version 25.x (built on Electron 39.2.7), the ELECTRON_RUN_AS_NODE fuse is not disabled, allowing an attacker who can place a file on disk or control command-line arguments to invoke the signed Actual.app binary with the ELECTRON_RUN_AS_NODE=1 environment variable set. This converts the application into a Node.js REPL capable of executing arbitrary code that inherits the application's entitlements and code signature, bypassing macOS Gatekeeper review. Version 26.5.0 patches the issue.
Frequently asked questions
- What is CVE-2026-42890?
- Actual is an open-source personal finance application. In the macOS desktop application version 25.x (built on Electron 39.2.7), the ELECTRON_RUN_AS_NODE fuse is not disabled, allowing an attacker who can place a file on disk or control command-line arguments to invoke the signed Actual.app binary with the ELECTRON_RUN_AS_NODE=1 environment variable set. This converts the application into a Node.js REPL capable of executing arbitrary code that inherits the application's entitlements and code signature, bypassing macOS Gatekeeper review. Version 26.5.0 patches the issue.
- How severe is CVE-2026-42890?
- CVE-2026-42890 has a CVSS 4.0 base score of 4.8, rated medium severity.
- Is CVE-2026-42890 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-42890?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-42890 have an EU (EUVD) identifier?
- Yes. CVE-2026-42890 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36547.
- When was CVE-2026-42890 published?
- CVE-2026-42890 was published on 2026-06-12 and last updated on 2026-06-17.
References
- https://actualbudget.org/blog/release-26.5.0
- https://github.com/actualbudget/actual/security/advisories/GHSA-7rvm-xjpp-63r9
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