# CVE-2026-87820: CyberPanel 2.4.3 through 2.4.5 Information Disclosure via AI Scanner

> Unauthenticated attackers can access AI Scanner debugging endpoints to disclose administrator usernames and API key prefixes, facilitating further attacks.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Sep 2026
- **Updated:** 14 Sep 2026
- **Also known as:** GHSA-2fq6-4p4m-j842, GHSA-qmwq-9cc8-x6h2

## What is CVE-2026-87820?

CVE-2026-87820 is a medium-severity vulnerability in usmannasir cyberpanel, published on 9 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

CyberPanel versions 2.4.3 through 2.4.5 expose unauthenticated AI Scanner debugging endpoints that disclose administrator usernames, API-key prefixes, scan identifiers, target domains, and account metadata. Unauthenticated attackers can enumerate panel administrators and recent scanner activity to inventory multi-tenant installations and facilitate follow-on attacks.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2026-87820?


## How do I fix CVE-2026-87820?

No fix has been published for CVE-2026-87820 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-87820 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-87820 exists.

Public exploit code:

- CyberPanel 2.4.3-2.4.5 - AI Scanner Debug Disclosure (nuclei): http/cves/2026/CVE-2026-87820.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-87820 and fix it if it is affected.

What it is: CVE-2026-87820 is a medium-severity vulnerability in usmannasir cyberpanel, published on 9 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-87820 exists.

Affected product: usmannasir cyberpanel. 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-2026-87820/ (Markdown: https://insights.sbomify.com/CVE-2026-87820/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-87820
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-87820
- OSV: https://osv.dev/vulnerability/CVE-2026-87820

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-87820/
Summaries are generated and may contain mistakes; the official description above is the record.