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Advisory record · GHSA-q4hm-fwc9-hmv6

Insecure temporary file used in com.squareup:connect

CVSS 4.4 MediumEPSS 0.0035 · 28th percentile

Published by the GitHub Advisory Database at 16 Jun 2021, 17:53 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
com.squareup:connectMaven<=2.20191120.0No fixed version yet
Identifiers
GHSA-q4hm-fwc9-hmv6 · CVE-2021-23331
Weakness (CWE)
CWE-377
Tags
Published
16 Jun 2021
Updated
13 Mar 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Insecure temporary file handling affects com.squareup:connect versions up to and including 2.20191120.0, with no fixed version listed. A local user on a Unix-like system can read the contents of files downloaded by the SDK, because the temporary file is created with world-readable permissions in the shared system temporary directory. As a workaround, set the java.io.tmpdir system property to a directory that only trusted users can access. The source notes this SDK version is end of life and recommends upgrading to the latest version.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
4.4 Medium 3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:P/RL:W/RC:C CNA (snyk)
  • CISA KEV Not listed.
  • EPSS 0.0035, the 28th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:20 UTC First seen by agentprime
  2. 31 Oct 2026, 14:20 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.