Description
The Tauri updater plugin verifies update binaries using minisign signatures, but the signature covers only the raw binary bytes. The update manifest -- which contains the version number, download URL, and signature -- is fetched over TLS but is never itself signed or authenticated. Because the only anti-rollback check compares the manifest's version field against the current version, and that field is unsigned, an attacker who can serve a crafted manifest can force installation of any older signed release without possessing the developer's private key.
Published: 2026-09-23
Score: 5.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

addressed in tauri-plugin-updater 2.12.0, and it has to be switched on. The new requireSignedVersion option compares the version announced by the endpoint against the version recorded in the signature's trusted comment, which the signature does cover, and rejects the update when they differ.

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History

Wed, 23 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 23 Sep 2026 11:45:00 +0000

Type Values Removed Values Added
Description The Tauri updater plugin verifies update binaries using minisign signatures, but the signature covers only the raw binary bytes. The update manifest -- which contains the version number, download URL, and signature -- is fetched over TLS but is never itself signed or authenticated. Because the only anti-rollback check compares the manifest's version field against the current version, and that field is unsigned, an attacker who can serve a crafted manifest can force installation of any older signed release without possessing the developer's private key.
Title Tauri framework v2 missing updater signature version number validation can be exploited into forced downgrade
Weaknesses CWE-354
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: JFROG

Published:

Updated: 2026-09-23T14:10:35.332Z

Reserved: 2026-09-22T10:38:03.883Z

Link: CVE-2026-95625

cve-icon Vulnrichment

Updated: 2026-09-23T14:10:32.174Z

cve-icon NVD

Status : Received

Published: 2026-09-23T09:17:09.393

Modified: 2026-09-23T15:17:30.207

Link: CVE-2026-95625

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-23T14:45:05Z

Weaknesses