What is CVE-2026-47122?

CVE-2026-47122 is a medium-severity vulnerability in Sparkle-Project Sparkle, classified under Missing Authentication for Critical Function. CVSS score: 4.2/10. Published 2026-07-21.

How severe is CVE-2026-47122?

Medium severity. CVSS v3 base score is 4.2 out of 10.

Auth bypass in Sparkle-Project Sparkle

CVE-2026-47122

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.

Vulnerability class: Broken Authentication

EPSS: 0.001 (1.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L.

Affected products

Sparkle-project Sparkle — versions <= 2.9.1

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-47122?: CVE-2026-47122 is a medium-severity vulnerability in Sparkle-Project Sparkle, classified under Missing Authentication for Critical Function. CVSS score: 4.2/10. Published 2026-07-21.
How severe is CVE-2026-47122?: Medium severity. CVSS v3 base score is 4.2 out of 10.