CVE-2026-47122 — Sparkle's AppInstaller post-stage-1 XPC listener accepts unvalidated connections, allowing spoofed appcast item data…

CVE-2026-47122

Sparkle's AppInstaller post-stage-1 XPC listener accepts unvalidated connections, allowing spoofed appcast item data injection PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
sparkle-project / Sparkle	affected <= 2.9.1

CWE

CWE-306, CWE-441

References

https://github.com/sparkle-project/Sparkle/security/advisories/GHSA-g3hp-f6mg-559v

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.