A temp directory creation vulnerability exists in all versions of Guava, allowing an attacker with access to the machine to potentially…
CVE-2020-8908
A temp directory creation vulnerability exists in all versions of Guava, allowing an attacker with access to the machine to potentially access data in a temporary directory created by the Guava API com.google.common.io.Files.createTempDir(). By default, on unix-like systems, the created directory is world-readable (readable by an attacker with access to the system). The method in question has been marked @Deprecated in versions 30.0 and later and should not be used. For Android developers, we recommend choosing a temporary directory API provided by Android, such as context.getCacheDir(). For other Java developers, we recommend migrating to the Java 7 API java.nio.file.Files.createTempDirectory() which explicitly configures permissions of 700, or configuring the Java runtime's java.io.tmpdir system property to point to a location whose permissions are appropriately configured.
Assessment
- CVSS
- 3.3 (v3.1)
- Severity
- Low
- EPSS
- 0.92% chance of exploitation in the next 30 days
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 10 December 2020
- Last updated
- 2 November 2026
- Affected
- Google LLC · Guava
- Assigner
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
At the source
References
- https://github.com/google/guava/issues/4011
- https://github.com/google/guava/commit/fec0dbc4634006a6162cfd4d0d09c962073ddf40
- https://snyk.io/vuln/SNYK-JAVA-COMGOOGLEGUAVA-1015415
- https://lists.apache.org/thread.html/r68d86f4b06c808204f62bcb254fcb5b0432528ee8d37a07ef4bc8222%40%3Ccommits.ws.apache.org%3E
- https://lists.apache.org/thread.html/r215b3d50f56faeb2f9383505f3e62faa9f549bb23e8a9848b78a968e%40%3Ccommits.ws.apache.org%3E
- https://lists.apache.org/thread.html/rb8c0f1b7589864396690fe42a91a71dea9412e86eec66dc85bbacaaf%40%3Ccommits.cxf.apache.org%3E
- https://lists.apache.org/thread.html/r4776f62dfae4a0006658542f43034a7fc199350e35a66d4e18164ee6%40%3Ccommits.cxf.apache.org%3E
- https://lists.apache.org/thread.html/rbc7642b9800249553f13457e46b813bea1aec99d2bc9106510e00ff3%40%3Ctorque-dev.db.apache.org%3E
- https://lists.apache.org/thread.html/r841c5e14e1b55281523ebcde661ece00b38a0569e00ef5e12bd5f6ba%40%3Cissues.maven.apache.org%3E
- https://lists.apache.org/thread.html/rc2dbc4633a6eea1fcbce6831876cfa17b73759a98c65326d1896cb1a%40%3Ctorque-dev.db.apache.org%3E
- https://lists.apache.org/thread.html/rd5d58088812cf8e677d99b07f73c654014c524c94e7fedbdee047604%40%3Ctorque-dev.db.apache.org%3E
- https://lists.apache.org/thread.html/r3c3b33ee5bef0c67391d27a97cbfd89d44f328cf072b601b58d4e748%40%3Ccommits.pulsar.apache.org%3E
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