Is CVE-2026-93534 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-93534 being exploited in the wild.

How severe is CVE-2026-93534?

Medium severity, with a CVSS score of 6.3, published 18 September 2026.

Is there a fix for CVE-2026-93534?

A patch was published on 2026-09-08: Version 1.4.3 released with signature verification Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-93534 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-93534?

Check whether you run Spatie Scotty at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-93534: Spatie Scotty code integrity check bypass in self-updater

CVE-2026-93534 · Severity: medium · CVSS 6.3 · Published 2026-09-18

Scotty is a PHP SSH task runner tool. The self-updater functionality could download and execute malicious code if an attacker intercepts the download, because it only checked that the downloaded file was non-empty and met a minimum size—not that it was authentic. An attacker with network access to the download could inject malicious code that executes when Scotty updates itself.

Vendors: Spatie.

Quick answers

Is CVE-2026-93534 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-93534 being exploited in the wild.
How severe is CVE-2026-93534?: Medium severity, with a CVSS score of 6.3, published 18 September 2026.
Which products and versions are affected?: Spatie Scotty up to 1.4.2.
Is there a fix for CVE-2026-93534?: A patch was published on 2026-09-08: Version 1.4.3 released with signature verification Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-93534 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-93534?: Check whether you run Spatie Scotty at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in the SelfUpdater::update function, which lacked cryptographic verification of downloaded PHAR files before installation (CWE-494). An attacker positioned to perform MITM or DNS poisoning could replace the legitimate PHAR with malicious code. The fix (v1.4.3) adds ed25519 signature verification against a public key embedded in the application, so the authenticity of releases is no longer transport-dependent.

Affected products

Spatie Scotty up to 1.4.2

Timeline

2026-09-18: disclosed
2026-09-08: patched: Version 1.4.3 released with signature verification

References

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