# CVE-2026-89251: AVideo Missing Authorization via AD_Server log.php Wallet Credit

> Logged-in users can exploit missing authorization in AVideo's ad logging to arbitrarily increase wallet balances for campaign videos without valid ad impressions.

- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/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:** 11 Sep 2026
- **Updated:** 11 Sep 2026
- **Also known as:** GHSA-2f9f-v5qc-xhg6, GHSA-cwrf-q9jv-44px

## What is CVE-2026-89251?

CVE-2026-89251 is a high-severity missing authorization vulnerability in WWBN AVideo, published on 11 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to validate ad impressions in plugin/AD_Server/log.php, allowing logged-in users to submit arbitrary label values that trigger unverified wallet credits to campaign video owners. Attackers can repeatedly POST label=start requests to mint YPTWallet balance for any campaign video without proof an ad actually played.

Weakness: CWE-345 (Insufficient Verification of Data Authenticity)

## Which versions are affected by CVE-2026-89251?


## How do I fix CVE-2026-89251?

No fix has been published for CVE-2026-89251 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-89251 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-89251 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-89251 and fix it if it is affected.

What it is: CVE-2026-89251 is a high-severity missing authorization vulnerability in WWBN AVideo, published on 11 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-89251 exists.

Affected product: WWBN AVideo. 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-2026-89251/ (Markdown: https://insights.sbomify.com/CVE-2026-89251/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-89251
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-89251
- OSV: https://osv.dev/vulnerability/CVE-2026-89251

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-89251/
Summaries are generated and may contain mistakes; the official description above is the record.