CVE-2026-47122: Sparkle is a software update framework for macOS

Q: How do I fix CVE-2026-47122?

sparkle: upgrade to newer than 2.9.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-47122 being exploited?

CVE-2026-47122 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-47122 affect?

CVE-2026-47122 affects sparkle. Severity is medium (CVSS 4.2). 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 `_

Q: How urgent is CVE-2026-47122?

Priority 15/100. No elevated risk signals yet.

Routine

MEDIUM 4.2UPGRADE

CVE-2026-47122 is a medium-severity flaw (CVSS 4.2) affecting sparkle. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 kno

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.2 (Medium)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 99%)
CISA exploited list	No
Weakness	CWE-306, CWE-441
Published	2026-07-21
Last modified	2026-10-24

Publisher (CNA): GitHub, Inc. · Vendor: sparkle-project

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-21 15:16 UTCPublished CVE record published
2026-10-24 20:10 UTCUpdated Record last modified

sparkle-project sparkle UPGRADE

Affected: <= 2.9.1

Fixed in: newer than 2.9.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy sparkle || rpm -q sparkle || sparkle --version

2. UPGRADE to newer than 2.9.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sparkle

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sparkle

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-47122?

sparkle: upgrade to newer than 2.9.1. Exact commands for each OS are on this page.

Is CVE-2026-47122 being exploited?

CVE-2026-47122 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-47122 affect?

CVE-2026-47122 affects sparkle. Severity is medium (CVSS 4.2). 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 `_

How urgent is CVE-2026-47122?

Priority 15/100. No elevated risk signals yet.

Software pages

macOS vulnerabilities

Related CVEs

CVE-2026-47121 MEDIUM 6.1 UPGRADE Sparkle is a software update framework for macOS

References

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