Description
Sparkle is a software update framework for macOS. In versions up to and including 2.9.1, `Autoupdate/AppInstaller.m`'s `shouldAcceptNewConnection:` only enforces `SUCodeSigningVerifier validateConnection:` before stage 1 completes. After `_performedStage1Installation = YES`, new connections to the registered Mach service `<bundleId>-spki` are accepted from any local process without team-ID or code-signing checks. As of time of publication, no known patched versions are available.
Affected products
sparkle-project: sparkle
References1
- github.com/sparkle-project/Sparkle/security/advisories/GHSA-g3h… Vendor AdvisoryMitigation
Metrics
- CVSS 3.1
-
4.2
MEDIUM
Score source: CNA
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L - EPSS — exploit probability
- 0% percentile: 1 · as of 14 November 2026
- CWE
- CWE-306CWE-441
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