CVE Catalog

CVE-2026-95624

MediumCVSS 6.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.45%

38th percentile - higher than 38% of all known CVEs

Summary

The Tauri updater plugin's 'check' IPC command accepts an allowDowngrades boolean parameter directly from frontend JavaScript code. When set to true, it replaces the version comparator from 'update must be newer' to 'update must be different'. Because the default permission set grants allow-check to the webview, any XSS in the app frontend can invoke this command and bypass the only anti-rollback protection the updater offers. Combined with another bug, this enables downgrade attacks without even needing to fake a higher version number.

Risk Assessment

Bypassing the anti-rollback protection allows an attacker to install an older, vulnerable version of the application. The risk materializes in the event of XSS in the app frontend.

Recommendation

Update the Tauri updater plugin to a patched version and restrict the allow-check permission for the webview.

Related vulnerabilities

Original NVD description (English source)

The Tauri updater plugin's 'check' IPC command accepts an allowDowngrades boolean parameter directly from frontend JavaScript code. When set to true, it replaces the version comparator from "update must be newer" to "update must be different." Because the default permission set grants allow-check to the webview, any XSS in the app frontend can invoke this command and bypass the only anti-rollback protection the updater offers. Combined with another bug, this enables downgrade attacks without even needing to fake a higher version number.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS