# CVE-2023-2887: User Authentication Bypass in CBOT's Chatbot

> Attackers can bypass authentication in CBOT Chatbot via spoofing, gaining unauthorized access to the system.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 May 2023
- **Updated:** 22 May 2026
- **Also known as:** GHSA-93j5-g9f6-h7xv

## What is CVE-2023-2887?

CVE-2023-2887 is a critical authentication bypass vulnerability in CBOT Chatbot, published on 25 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Authentication Bypass by Spoofing vulnerability in CBOT Chatbot allows Authentication Bypass.

This issue affects Chatbot: before Core: v4.0.3.4 Panel: v4.0.3.7.

Weakness: CWE-290 (Authentication Bypass by Spoofing)

## Which versions are affected by CVE-2023-2887?

It affects 2 products.


Products: Cbot Cbot Core, Cbot Cbot Panel.

## How do I fix CVE-2023-2887?

No fix has been published for CVE-2023-2887 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-2887 being exploited?

There is no known exploitation of CVE-2023-2887 in the wild and no public exploit code.

## Other vulnerabilities in CBOT Chatbot

- [CVE-2023-2882](https://insights.sbomify.com/CVE-2023-2882/): Privilege Escalation in CBOT's Chatbot (critical 9.8)
- [CVE-2023-2884](https://insights.sbomify.com/CVE-2023-2884/): Insecure Randomness in CBOT's Chatbot (critical 9.8)
- [CVE-2023-2883](https://insights.sbomify.com/CVE-2023-2883/): IDOR in CBOT's Chatbot (high 8.8)
- [CVE-2023-2885](https://insights.sbomify.com/CVE-2023-2885/): Channel Accessible by Non-Endpoint in CBOT's Chatbot (high 8.1)
- [CVE-2023-2886](https://insights.sbomify.com/CVE-2023-2886/): Cross-Site WebSocket Hijacking in CBOT's Chatbot (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-2887 and fix it if it is affected.

What it is: CVE-2023-2887 is a critical authentication bypass vulnerability in CBOT Chatbot, published on 25 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-2887 in the wild and no public exploit code.

Affected product: CBOT Chatbot. 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-2023-2887/ (Markdown: https://insights.sbomify.com/CVE-2023-2887/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-2887
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-2887
- OSV: https://osv.dev/vulnerability/CVE-2023-2887

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-2887/
Summaries are generated and may contain mistakes; the official description above is the record.