---
id: "CVE-2026-108088"
kind: "vulnerability"
aliases: ["CVE-2026-108088"]
title: "Apache Cocoon: shared cache can serve one user's content to another"
severity: "medium"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["apache-cocoon", "java", "package", "self-hosted"]
not_affected_if: ["auth-required", "single-user"]
published_at: "2026-10-20T11:17:16+00:00"
first_seen_at: "2026-10-23T21:57:20+00:00"
updated_at: "2026-10-25T05:04:52+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-108088", "first_seen_at": "2026-10-23T21:57:20+00:00"}]
---

# Apache Cocoon: shared cache can serve one user's content to another

When Apache Cocoon's cache is used in a multi-user application, cached values for one user can be served to other users. An attacker may therefore see content that was generated for someone else.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check whether the project depends on Apache Cocoon, for example by searching the build files or `pom.xml` for `cocoon`.
- Check whether the Cocoon cache is enabled and whether the instance serves more than one user.

## Fix

- The project is retired and no fixed version will be released.
- Move to an alternative, or restrict access to the instance to trusted users only.

## Timeline

- 2026-10-23T21:57:20+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-108088

## From the sources

** UNSUPPORTED WHEN ASSIGNED ** Use of cache containing sensitive information vulnerability in Apache Cocoon. When using the cache on a multi-user application, cached values for one user could be used when serving content for other users.



This issue affects Apache Cocoon: all versions.



As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users.



NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

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