# Encoded URIs can access WEB-INF directory in Eclipse Jetty

Advisory record · `GHSA-vjv5-gp2w-65vm`

- **Identifiers:** `GHSA-vjv5-gp2w-65vm` · `CVE-2021-34429`
- **State:** Confirmed
- **Severity:** CVSS 5.3 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-200](https://cwe.mitre.org/data/definitions/200.html) · [CWE-551](https://cwe.mitre.org/data/definitions/551.html) · [CWE-863](https://cwe.mitre.org/data/definitions/863.html)
- **Tags:** [Information disclosure](https://agentprime.io/advisories/tag/info-disclosure.md) · [Broken access control](https://agentprime.io/advisories/tag/access-control.md) · [CWE-551](https://agentprime.io/advisories/tag/cwe-551.md)
- **Published:** 19 Jul 2021
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 19 Jul 2021, 15:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.eclipse.jetty:jetty-webapp` (Maven): affected `>=9.4.37, <9.4.43 || >=10.0.1, <10.0.6 || >=11.0.1, <11.0.6`; fixed in `9.4.43`, `10.0.6`, `11.0.6`

## 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.99, the 99th 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-vjv5-gp2w-65vm)

## Sources

- [GitHub Advisory Database: GHSA-vjv5-gp2w-65vm](https://github.com/advisories/GHSA-vjv5-gp2w-65vm)
- [OSV: GHSA-vjv5-gp2w-65vm](https://osv.dev/vulnerability/GHSA-vjv5-gp2w-65vm)
- <https://github.com/eclipse/jetty.project/security/advisories/GHSA-vjv5-gp2w-65vm>
- <https://nvd.nist.gov/vuln/detail/CVE-2021-34429>
- <https://lists.apache.org/thread.html/r763840320a80e515331cbc1e613fa93f25faf62e991974171a325c82@%3Cdev.zookeeper.apache.org%3E>
- <https://lists.apache.org/thread.html/r7dd079fa0ac6f47ba1ad0af98d7d0276547b8a4e005f034fb1016951@%3Cissues.zookeeper.apache.org%3E>
- <https://lists.apache.org/thread.html/r833a4c8bdbbfeb8a2cd38238e7b59f83edd5c1a0e508b587fc551a46@%3Cissues.hbase.apache.org%3E>
- <https://lists.apache.org/thread.html/r8e6c116628c1277c3cf132012a66c46a0863fa2a3037c0707d4640d4@%3Cissues.zookeeper.apache.org%3E>
- <https://lists.apache.org/thread.html/r90e7b4c42a96d74c219e448bee6a329ab0cd3205c44b63471d96c3ab@%3Cissues.zookeeper.apache.org%3E>
- <https://lists.apache.org/thread.html/r9d245c6c884bbc804a472116d730c1a01676bf24f93206a34923fc64@%3Ccommits.kafka.apache.org%3E>
- <https://lists.apache.org/thread.html/r9e6158d72ef25077c2dc59fbddade2eacf7d259a2556c97a989f2fe8@%3Ccommits.pulsar.apache.org%3E>
- <https://lists.apache.org/thread.html/rb33d65c3e5686f2e3b9bb8a032a44163b2f2ad9d31a8727338f213c1@%3Ccommits.pulsar.apache.org%3E>
- <https://lists.apache.org/thread.html/rc26807be68748b3347decdcd03ae183622244b0b4cb09223d4b7e500@%3Ccommits.pulsar.apache.org%3E>
- <https://lists.apache.org/thread.html/rcb157f55b9ae41b3076801de927c6fca1669c6d8eaf11a9df5dbeb46@%3Cnotifications.zookeeper.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-vjv5-gp2w-65vm>, 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-vjv5-gp2w-65vm/>. Everything for agents: <https://agentprime.io/llms.txt>.