Sparkle's AppInstaller post-stage-1 XPC listener accepts unvalidated connections, allowing spoofed appcast item data injection (sparkle-project Sparkle)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.10 % · percentile 1 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-306 — Missing Authentication for Critical Functionality
- CWE-441 — Unintended Proxy or Intermediary
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 4.2 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L | GitHub_M |
| CVSS 3.1 | MEDIUM 4.2 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L | NVD · security-advisories@github.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-46275
- GCVE · GCVE-0-2026-47122
Affected configurations (NVD CPE)
cpe:2.3:a:sparkle-project:sparkle:*:*:*:*:*:*:*:*≤ 2.9.1
Affected products
| Product | Versions |
|---|---|
| sparkle-project · Sparkle | affected <= 2.9.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |