# Information Disclosure in Guava

Advisory record · `GHSA-5mg8-w23w-74h3`

- **Identifiers:** `GHSA-5mg8-w23w-74h3` · `CVE-2020-8908` · `SNYK-JAVA-COMGOOGLEGUAVA-1015415`
- **State:** Confirmed
- **Severity:** CVSS 3.3 Low
- **Critical:** No
- **Weakness (CWE):** [CWE-173](https://cwe.mitre.org/data/definitions/173.html) · [CWE-200](https://cwe.mitre.org/data/definitions/200.html) · [CWE-378](https://cwe.mitre.org/data/definitions/378.html) · [CWE-732](https://cwe.mitre.org/data/definitions/732.html)
- **Tags:** [Information disclosure](https://agentprime.io/advisories/tag/info-disclosure.md) · [Broken access control](https://agentprime.io/advisories/tag/access-control.md) · [CWE-173](https://agentprime.io/advisories/tag/cwe-173.md) · [CWE-378](https://agentprime.io/advisories/tag/cwe-378.md)
- **Published:** 25 Mar 2021
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 25 Mar 2021, 17:04 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `com.google.guava:guava` (Maven): affected `<32.0.0-android`; fixed in `32.0.0-android`

## Machine-written summary

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

> Guava (Maven com.google.guava:guava) versions before 32.0.0-android are affected. An attacker with local access to the machine can potentially read data in temporary directories created by Files.createTempDir(), because the directory gets default Unix-like /tmp permissions. Upgrade to 32.0.0-android or later; alternatively, explicitly set the directory permissions after creation or stop using createTempDir().

Written 2 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

- 3.3 Low, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`, from CNA (Google)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0092, the 60th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 10 Dec 2020, 22:10 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2020-8908)
- 10 Dec 2020, 23:15 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2020-8908)
- 31 Oct 2026, 14:18 UTC: First seen by agentprime
- 31 Oct 2026, 14:18 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-5mg8-w23w-74h3)

## Sources

- [GitHub Advisory Database: GHSA-5mg8-w23w-74h3](https://github.com/advisories/GHSA-5mg8-w23w-74h3)
- [OSV: GHSA-5mg8-w23w-74h3](https://osv.dev/vulnerability/GHSA-5mg8-w23w-74h3)
- <https://nvd.nist.gov/vuln/detail/CVE-2020-8908>
- <https://github.com/google/guava/issues/4011>
- <https://github.com/google/guava/issues/4011#issuecomment-1578991974>
- <https://github.com/google/guava/commit/feb83a1c8fd2e7670b244d5afd23cba5aca43284>
- <https://github.com/google/guava/commit/fec0dbc4634006a6162cfd4d0d09c962073ddf40>
- <https://lists.apache.org/thread.html/rd5d58088812cf8e677d99b07f73c654014c524c94e7fedbdee047604@%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/rd2704306ec729ccac726e50339b8a8f079515cc29ccb77713b16e7c5@%3Cissues.hive.apache.org%3E>
- <https://lists.apache.org/thread.html/rd2704306ec729ccac726e50339b8a8f079515cc29ccb77713b16e7c5%40%3Cissues.hive.apache.org%3E>
- <https://lists.apache.org/thread.html/rd01f5ff0164c468ec7abc96ff7646cea3cce6378da2e4aa29c6bcb95@%3Cgithub.arrow.apache.org%3E>
- <https://lists.apache.org/thread.html/rd01f5ff0164c468ec7abc96ff7646cea3cce6378da2e4aa29c6bcb95%40%3Cgithub.arrow.apache.org%3E>
- <https://lists.apache.org/thread.html/rcafc3a637d82bdc9a24036b2ddcad1e519dd0e6f848fcc3d606fd78f@%3Cdev.hive.apache.org%3E>

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.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-5mg8-w23w-74h3>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-5mg8-w23w-74h3/>. Everything for agents: <https://agentprime.io/llms.txt>.
