CVE-2020-8908 | Temp directory permission issue in Guava

Exp

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.

Published: 2020-12-10 Last update: 2026-02-23 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2020-8908 is rated Exploit Available (50/100): CVSS Low severity, with medium exploitation likelihood (EPSS 0.96%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2020-8908

EDB-ID Source Kind Published Link
nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-8908

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.07% 0.96% +0.89%
2 2026-03-04 0.01% 0.07% +0.06%
3 2026-03-01 0.01%

Full EPSS history (31 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-8908

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.3 3.1 LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
1.8 1.4 [email protected]
3.3 3.1 LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
1.8 1.4 [email protected]
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
3.9 2.9 [email protected]

Weakness enumeration for CVE-2020-8908

GitHub Security Advisory for CVE-2020-8908

OS Trackers for CVE-2020-8908

vendor priority summary link
debian not yet assigned CVE-2020-8908 not yet assigned priority: Debian including 1 source packages (guava-libraries), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2020-8908
redhat low https://access.redhat.com/security/cve/CVE-2020-8908
suse medium CVE-2020-8908 severity moderate: SUSE including 257 source package names (11-8.43:guava-32.0.1-150200.3.7.1, 17.0.15.0-7.6:guava-32.0.1-150200.3.7.1, …), 365 product×package rows across 59 product lines (Container bci/openjdk-devel, Container suse/manager/5.0/x86_64/server, … (59 product lines)): Known Affected 231, Fixed 76, Known Not Affected 58. https://www.suse.com/security/cve/CVE-2020-8908/
ubuntu medium CVE-2020-8908 medium priority: Ubuntu including 1 source packages (guava-libraries), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): needed 5, not-affected 4, ignored 3, released 1. https://ubuntu.com/security/CVE-2020-8908

Affected software / configurations for CVE-2020-8908

Vendor Product Version Raw CPE
google guava < 32.0.0 cpe:2.3:a:google:guava:*:*:*:*:*:*:*:*
quarkus quarkus < 1.11.4 cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:*
oracle commerce_guided_search 11.3.2 cpe:2.3:a:oracle:commerce_guided_search:11.3.2:*:*:*:*:*:*:*
oracle communications_cloud_native_core_network_slice_selection_function 1.2.1 cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.2.1:*:*:*:*:*:*:*
oracle communications_pricing_design_center 12.0.0.4.0 cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.4.0:*:*:*:*:*:*:*
oracle communications_pricing_design_center 12.0.0.5.0 cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.5.0:*:*:*:*:*:*:*
oracle data_integrator 12.2.1.3.0 cpe:2.3:a:oracle:data_integrator:12.2.1.3.0:*:*:*:*:*:*:*
oracle data_integrator 12.2.1.4.0 cpe:2.3:a:oracle:data_integrator:12.2.1.4.0:*:*:*:*:*:*:*
oracle nosql_database < 20.3 cpe:2.3:a:oracle:nosql_database:*:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.57 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.58 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.59 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:*
oracle retail_customer_management_and_segmentation_foundation >= 16.0, <= 19.0 cpe:2.3:a:oracle:retail_customer_management_and_segmentation_foundation:*:*:*:*:*:*:*:*
oracle weblogic_server 14.1.1.0.0 cpe:2.3:a:oracle:weblogic_server:14.1.1.0.0:*:*:*:*:*:*:*
oracle communications_cloud_native_core_network_repository_function 1.14.0 cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.14.0:*:*:*:*:*:*:*
oracle primavera_unifier >= 17.7, <= 17.12 cpe:2.3:a:oracle:primavera_unifier:*:*:*:*:*:*:*:*
oracle primavera_unifier 18.8 cpe:2.3:a:oracle:primavera_unifier:18.8:*:*:*:*:*:*:*
oracle primavera_unifier 19.12 cpe:2.3:a:oracle:primavera_unifier:19.12:*:*:*:*:*:*:*
oracle primavera_unifier 20.12 cpe:2.3:a:oracle:primavera_unifier:20.12:*:*:*:*:*:*:*
oracle primavera_unifier 21.12 cpe:2.3:a:oracle:primavera_unifier:21.12:*:*:*:*:*:*:*
netapp active_iq_unified_manager cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:*
netapp active_iq_unified_manager cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
netapp active_iq_unified_manager cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:*

References for CVE-2020-8908

URL Tags
https://github.com/google/guava/commit/fec0dbc4634006a6162cfd4d0d09c962073ddf40 Patch Third Party Advisory
https://github.com/google/guava/issues/4011 Issue Tracking Patch Third Party Advisory
https://lists.apache.org/thread.html/r007add131977f4f576c232b25e024249a3d16f66aad14a4b52819d21%40%3Ccommon-issues.hadoop.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r07ed3e4417ad043a27bee7bb33322e9bfc7d7e6d1719b8e3dfd95c14%40%3Cdev.drill.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r161b87f8037bbaff400194a63cd2016c9a69f5949f06dcc79beeab54%40%3Cdev.drill.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r215b3d50f56faeb2f9383505f3e62faa9f549bb23e8a9848b78a968e%40%3Ccommits.ws.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r294be9d31c0312d2c0837087204b5d4bf49d0552890e6eec716fa6a6%40%3Cyarn-issues.hadoop.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r2fe45d96eea8434b91592ca08109118f6308d60f6d0e21d52438cfb4%40%3Cdev.drill.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r3c3b33ee5bef0c67391d27a97cbfd89d44f328cf072b601b58d4e748%40%3Ccommits.pulsar.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r3dd8881de891598d622227e9840dd7c2ef1d08abbb49e9690c7ae1bc%40%3Cissues.geode.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r4776f62dfae4a0006658542f43034a7fc199350e35a66d4e18164ee6%40%3Ccommits.cxf.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r49549a8322f62cd3acfa4490d25bfba0be04f3f9ff4d14fe36199d27%40%3Cyarn-dev.hadoop.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r58a8775205ab1839dba43054b09a9ab3b25b423a4170b2413c4067ac%40%3Ccommon-issues.hadoop.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r5b3d93dfdfb7708e796e8762ab40edbde8ff8add48aba53e5ea26f44%40%3Cissues.geode.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r5d61b98ceb7bba939a651de5900dbd67be3817db6bfcc41c6e04e199%40%3Cyarn-issues.hadoop.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r6874dfe26eefc41b7c9a5e4a0487846fc4accf8c78ff948b24a1104a%40%3Cdev.drill.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r68d86f4b06c808204f62bcb254fcb5b0432528ee8d37a07ef4bc8222%40%3Ccommits.ws.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r79e47ed555bdb1180e528420a7a2bb898541367a29a3bc6bbf0baf2c%40%3Cissues.hive.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r7b0e81d8367264d6cad98766a469d64d11248eb654417809bfdacf09%40%3Cyarn-issues.hadoop.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r841c5e14e1b55281523ebcde661ece00b38a0569e00ef5e12bd5f6ba%40%3Cissues.maven.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/ra7ab308481ee729f998691e8e3e02e93b1dedfc98f6b1cd3d86923b3%40%3Cyarn-issues.hadoop.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/rb2364f4cf4d274eab5a7ecfaf64bf575cedf8b0173551997c749d322%40%3Cgitbox.hive.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/rb8c0f1b7589864396690fe42a91a71dea9412e86eec66dc85bbacaaf%40%3Ccommits.cxf.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/rbc7642b9800249553f13457e46b813bea1aec99d2bc9106510e00ff3%40%3Ctorque-dev.db.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/rc2dbc4633a6eea1fcbce6831876cfa17b73759a98c65326d1896cb1a%40%3Ctorque-dev.db.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/rc607bc52f3507b8b9c28c6a747c3122f51ac24afe80af2a670785b97%40%3Cissues.geode.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/rcafc3a637d82bdc9a24036b2ddcad1e519dd0e6f848fcc3d606fd78f%40%3Cdev.hive.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/rd01f5ff0164c468ec7abc96ff7646cea3cce6378da2e4aa29c6bcb95%40%3Cgithub.arrow.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/rd2704306ec729ccac726e50339b8a8f079515cc29ccb77713b16e7c5%40%3Cissues.hive.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/rd5d58088812cf8e677d99b07f73c654014c524c94e7fedbdee047604%40%3Ctorque-dev.db.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/rd7e12d56d49d73e2b8549694974b07561b79b05455f7f781954231bf%40%3Cdev.pig.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/re120f6b3d2f8222121080342c5801fdafca2f5188ceeb3b49c8a1d27%40%3Cyarn-issues.hadoop.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/reebbd63c25bc1a946caa419cec2be78079f8449d1af48e52d47c9e85%40%3Cissues.geode.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/rf00b688ffa620c990597f829ff85fdbba8bf73ee7bfb34783e1f0d4e%40%3Cyarn-dev.hadoop.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/rf9f0fa84b8ae1a285f0210bafec6de2a9eba083007d04640b82aa625%40%3Cissues.geode.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/rfc27e2727a20a574f39273e0432aa97486a332f9b3068f6ac1346594%40%3Cdev.myfaces.apache.org%3E Third Party Advisory
https://security.netapp.com/advisory/ntap-20220210-0003/ Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-COMGOOGLEGUAVA-1015415 Exploit Patch Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html Patch Third Party Advisory
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