{"id":"CVE-2026-47122","aliases":["GHSA-g3hp-f6mg-559v"],"url":"https://o3.security/vulnerability/CVE-2026-47122","summary":"Sparkle's AppInstaller post-stage-1 XPC listener accepts unvalidated connections, allowing spoofed appcast item data injection","details":"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.","published":"2026-07-21T13:57:59.824Z","modified":"2026-08-12T03:51:22.729785427Z","cvss":{"score":4.2,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L"},"epss":{"score":0.00078,"percentile":0.00141,"asOf":"2026-08-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"SwiftURL","name":"github.com/sparkle-project/Sparkle","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47122.json"},{"type":"ADVISORY","url":"https://github.com/sparkle-project/Sparkle/security/advisories/GHSA-g3hp-f6mg-559v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47122"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:22.729785427Z"}}