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.
Metrics
Affected Vendors & Products
References
History
Tue, 22 Sep 2026 20:30:00 +0000
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ssvc
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Tue, 22 Sep 2026 19:45:00 +0000
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Tauri
Tauri tauri-plugin-updater |
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| Vendors & Products |
Tauri
Tauri tauri-plugin-updater |
Tue, 22 Sep 2026 17:30:00 +0000
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| Description | 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. | |
| Title | Tauri framework v2 malicious downgrade via allow_downgrades from frontend code | |
| Weaknesses | CWE-284 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: JFROG
Published: 2026-09-22T17:16:25.195Z
Updated: 2026-09-22T19:30:22.534Z
Reserved: 2026-09-22T10:38:03.883Z
Link: CVE-2026-95624
Updated: 2026-09-22T19:30:10.219Z
Status : Deferred
Published: 2026-09-22T18:17:36.247
Modified: 2026-09-22T20:17:13.343
Link: CVE-2026-95624
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