# Local information disclosure via system temporary directory

Advisory record · `GHSA-c43q-5hpj-4crv`

- **Identifiers:** `GHSA-c43q-5hpj-4crv` · `CVE-2021-28168`
- **State:** Confirmed
- **Severity:** CVSS 6.2 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-378](https://cwe.mitre.org/data/definitions/378.html) · [CWE-379](https://cwe.mitre.org/data/definitions/379.html) · [CWE-668](https://cwe.mitre.org/data/definitions/668.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-378](https://agentprime.io/advisories/tag/cwe-378.md) · [CWE-379](https://agentprime.io/advisories/tag/cwe-379.md)
- **Published:** 23 Apr 2021
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 23 Apr 2021, 16:55 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.glassfish.jersey.core:jersey-common` (Maven): affected `>=2.28, <2.34 || >=3.0.0, <3.0.2`; fixed in `2.34`, `3.0.2`

## Machine-written summary

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

> Eclipse Jersey (org.glassfish.jersey.core:jersey-common) versions 2.28 through 2.33 and 3.0.0 through 3.0.1 are vulnerable. Temporary files created by Jersey are readable by other local users on unix-like systems, so a local user can read any security-sensitive contents written to them. Upgrade to 2.34 or 3.0.2. Until then, setting the java.io.tmpdir system property when launching the JVM is a mitigation.

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

- 6.2 Medium, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`, from CNA (eclipse)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0087, the 58th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:18 UTC: First seen by agentprime
- 31 Oct 2026, 14:18 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-c43q-5hpj-4crv)

## Sources

- [GitHub Advisory Database: GHSA-c43q-5hpj-4crv](https://github.com/advisories/GHSA-c43q-5hpj-4crv)
- [OSV: GHSA-c43q-5hpj-4crv](https://osv.dev/vulnerability/GHSA-c43q-5hpj-4crv)
- <https://github.com/eclipse-ee4j/jersey/security/advisories/GHSA-c43q-5hpj-4crv>
- <https://nvd.nist.gov/vuln/detail/CVE-2021-28168>
- <https://github.com/eclipse-ee4j/jersey/pull/4712>
- <https://www.oracle.com/security-alerts/cpuapr2022.html>
- <https://lists.apache.org/thread.html/rdff6939e6c8dd620e20b013d9a35f57d42b3cd19e1d0483d85dfa2fd@%3Cjira.kafka.apache.org%3E>
- <https://lists.apache.org/thread.html/rd54b42edccc1b993853a9c4943a9b16db763f5e2febf6e64b7d0fe3c@%3Cjira.kafka.apache.org%3E>
- <https://lists.apache.org/thread.html/rc6221670de35b819fe191e7d8f2d17bc000549bd554020cec644b71e@%3Cjira.kafka.apache.org%3E>
- <https://lists.apache.org/thread.html/rc288874c330b3af9e29a1a114c5e0d24fff7a79eaa341f551535c8c0@%3Cjira.kafka.apache.org%3E>
- <https://lists.apache.org/thread.html/rafc3c4cee534f478cbf8acf91e48373e291a21151f030e8132662a7b@%3Cjira.kafka.apache.org%3E>
- <https://lists.apache.org/thread.html/ra3d7cd37fc794981a885332af2f8df0d873753380ea19935d6d847fc@%3Cdev.kafka.apache.org%3E>
- <https://lists.apache.org/thread.html/ra3290fe51b4546fac195724c4187c4cb7fc5809bc596c2f7e97606f4@%3Cjira.kafka.apache.org%3E>
- <https://lists.apache.org/thread.html/ra2722171d569370a9e15147d9f3f6138ad9a188ee879c0156aa2d73a@%3Cjira.kafka.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-c43q-5hpj-4crv>, 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-c43q-5hpj-4crv/>. Everything for agents: <https://agentprime.io/llms.txt>.