CVE-2026-47122CWE-306CWE-441

CVE-2026-47122

Medium · published July 21, 2026

CVSS v3.1
4.2
EPSS
0%
Percentile
1.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.2 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00105 · 1.0th percentile
Weaknesses
CWE-306 · Missing Authentication for Critical Function; CWE-441 · Unintended Proxy or Intermediary ('Confused Deputy')
Published
2026-07-21T19:16Z
Affected products (1)
ProductVersionsFixed in
sparkle-project/sparkle≤ 2.9.1—
References (1)
https://github.com/sparkle-project/Sparkle/security/advisories/GHSA-g3hp-f6mg-559v · [email protected]
EPSS history
Timeline
  • 21 JUL 13:57Z
    Sparkle's AppInstaller post-stage-1 XPC listener accepts unvalidated connections, allowing spoofed appcast item data injection
    cvelistv5