# CVE-2026-33688: AVideo has Pre-Captcha User Enumeration and Account Status Disclosure in Password Recovery Endpoint

> Unauthenticated attackers can enumerate valid usernames and account statuses via the password recovery endpoint due to missing captcha validation.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Mar 2026
- **Updated:** 24 Mar 2026
- **Also known as:** GHSA-m99f-mmvg-3xmx

## What is CVE-2026-33688?

CVE-2026-33688 is a medium-severity vulnerability in Wwbn Avideo, published on 23 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the password recovery endpoint at `objects/userRecoverPass.php` performs user existence and account status checks before validating the captcha. This allows an unauthenticated attacker to enumerate valid usernames and determine whether accounts are active, inactive, or banned — at scale and without solving any captcha — by observing three distinct JSON error responses. Commit e42f54123b460fd1b2ee01f2ce3d4a386e88d157 contains a patch.

Weakness: CWE-204 (Observable Response Discrepancy)

## Which versions are affected by CVE-2026-33688?

2 open source packages ship an affected version, including wwbn/avideo. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `wwbn/avideo` | Packagist | All versions to 26.0 | None |
| `wwbn/avideo` | Packagist | All versions to 26.0 | None |

Products: Wwbn Avideo.

## How do I fix CVE-2026-33688?

No fix has been published for CVE-2026-33688 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-33688 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33688 exists.

## Other vulnerabilities in Wwbn Avideo

- [CVE-2026-40911](https://insights.sbomify.com/CVE-2026-40911/): WWBN AVideo YPTSocket WebSocket Broadcast Relay Leads to Unauthenticated Cross-User JavaScript Execution via Client-Side eval() Sinks (critical 10.0)
- [CVE-2026-33478](https://insights.sbomify.com/CVE-2026-33478/): AVideo Multi-Chain Attack: Unauthenticated Remote Code Execution via Clone Key Disclosure, Database Dump, and Command Injection (critical 10.0)
- [CVE-2022-30534](https://insights.sbomify.com/CVE-2022-30534/): Command injection in AVideo (critical 9.9)
- [CVE-2022-30547](https://insights.sbomify.com/CVE-2022-30547/): Path traversal in AVideo (critical 9.9)
- [CVE-2022-32572](https://insights.sbomify.com/CVE-2022-32572/): Command injection in AVideo (critical 9.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-33688 and fix it if it is affected.

What it is: CVE-2026-33688 is a medium-severity vulnerability in Wwbn Avideo, published on 23 Mar 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-2026-33688 exists.

Affected packages and fixed versions:
- wwbn/avideo (Packagist): affected all versions up to 26.0; no fix listed
- wwbn/avideo (Packagist): affected all versions up to 26.0; no fix listed

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-2026-33688/ (Markdown: https://insights.sbomify.com/CVE-2026-33688/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-33688
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33688
- OSV: https://osv.dev/vulnerability/CVE-2026-33688

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-33688/
Summaries are generated and may contain mistakes; the official description above is the record.