# CVE-2026-82348: Apache Roller: Cross-weblog resource tampering via unscoped authoring lookups

> Authenticated users can read, modify, or delete resources from other weblogs due to unscoped identifier lookups, compromising multi-user isolation.

- **Severity:** High 7.7 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Sep 2026
- **Updated:** 29 Sep 2026
- **Also known as:** GHSA-gxxm-hxjp-gc3f

## What is CVE-2026-82348?

CVE-2026-82348 is a high-severity missing authorization vulnerability in Apache Roller, published on 28 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Authorization Bypass Through User-Controlled Key in Apache Roller 6.1.5 allows an authenticated user with authoring rights on one weblog to read, modify, or delete resources belonging to another weblog through unscoped identifier-based lookups. This affects multi-user installations where users are intended to be isolated between weblogs; no optional feature or non-default configuration is required. A user with administrator rights on their weblog can also overwrite another weblog's Velocity template, whose content is evaluated when the victim weblog renders. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which scopes authoring resource lookups to the acting weblog.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-82348?


## How do I fix CVE-2026-82348?

No fix has been published for CVE-2026-82348 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-82348 being exploited?

There is no known exploitation of CVE-2026-82348 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-82348 and fix it if it is affected.

What it is: CVE-2026-82348 is a high-severity missing authorization vulnerability in Apache Roller, published on 28 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-82348 in the wild and no public exploit code.

Affected product: Apache Roller. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-82348/ (Markdown: https://insights.sbomify.com/CVE-2026-82348/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-82348
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-82348
- OSV: https://osv.dev/vulnerability/CVE-2026-82348

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-82348/
Summaries are generated and may contain mistakes; the official description above is the record.