CVE-2026-95625: Tauri framework v2 missing updater signature version number validation can be exploited into forced downgrade

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-23 · updated 2026-09-23
Weakness: CWE-354

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.

Affected products

tauri-plugin-updater: from 2.0.0 before 2.12.0; from 2.12.0 — fixed in 2.12.0

How to fix

Upgrade to a fixed version: tauri-plugin-updater 2.12.0. Check the vendor advisory for mitigations.

References

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