# CVE-2026-111046: FOSSBilling: Low-privileged staff can read and modify configuration of deactivated extensions

> Low-privileged staff can read and modify configuration of deactivated extensions in FOSSBilling due to a permission check bypass.

- **Severity:** Low 2.3 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N`)
- **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:** 19 Oct 2026
- **Updated:** 19 Oct 2026
- **Also known as:** GHSA-3g7m-ph2r-jhcx

## What is CVE-2026-111046?

CVE-2026-111046 is a low-severity missing authorization vulnerability in FOSSBilling, published on 19 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

FOSSBilling is an open source billing and client-management platform. From 0.8.4 until 0.8.6, hasManagePermission fails open for inactive non-core modules because its early return on !isExtensionActive skips the module-access and manage_settings checks. A low-privileged staff account with module-level extension access targets a deactivated non-core module through extension/config_get or extension/config_save. The account can call api/admin/extension/config_get or api/admin/extension/config_save for a deactivated non-core module to read decrypted retained extension secrets and overwrite stored extension configuration. The getConfig function returns the decrypted stored configuration despite the module's inactive state. This residual path remained after the earlier CVE-2026-62962 authorization fix. This issue is fixed in version 0.8.6.

Weakness: CWE-863 (Incorrect Authorization), CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-111046?


## How do I fix CVE-2026-111046?

No fix has been published for CVE-2026-111046 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-111046 being exploited?

There is no known exploitation of CVE-2026-111046 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-111046 and fix it if it is affected.

What it is: CVE-2026-111046 is a low-severity missing authorization vulnerability in FOSSBilling, published on 19 Oct 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-2026-111046 in the wild and no public exploit code.

Affected product: FOSSBilling. 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-2026-111046/ (Markdown: https://insights.sbomify.com/CVE-2026-111046/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-111046
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-111046
- OSV: https://osv.dev/vulnerability/CVE-2026-111046

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-111046/
Summaries are generated and may contain mistakes; the official description above is the record.