CVE-2026-42890

Description

## Summary A electron run as node vulnerability was identified in `actual` (macOS application, version `25.x (Electron 39.2.7)`). **Vulnerability Type:** Electron Run As Node ## Description ELECTRON_RUN_AS_NODE fuse enabled (Electron 39.2.7) — app can be converted to Node.js REPL for arbitrary code execution ## Impact An attacker who can place a file on disk or control command-line arguments can invoke the signed Actual.app binary with ELECTRON_RUN_AS_NODE=1 to execute arbitrary Node.js code inheriting the apps entitlements and code signature. This bypasses macOS Gatekeeper review of the payload: the Node.js script runs as Actual, under Actuals bundle ID and signed identity, and has access to any entitlements the app carries (network, file access, keychain, automation). Combined with any downloader (browser, mail attachment, Slack link) this becomes a signed-binary-abuse primitive on every Mac with Actual installed.

How to fix CVE-2026-42890

To remediate CVE-2026-42890, upgrade the affected package to a fixed version below.

• —upgrade to 26.5.0 or later

Is CVE-2026-42890 being exploited?

No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-42890.

Affected packages (1)

• from 0, < 26.5.0

CVSS scores

References (4)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2026-42890
• PATCHgithub.com/actualbudget/actual
• WEBactualbudget.org/blog/release-26.5.0
• WEBgithub.com/actualbudget/actual/security/advisories/GHSA-7rvm-xjpp-63r9