# CVE-2026-89247: WWBN AVideo XML Injection via plugin/AD_Server/VMAP.php

> Remote attackers can inject malicious XML into video ads via unauthenticated requests, potentially leading to code execution or data theft.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 11 Sep 2026
- **Updated:** 15 Sep 2026
- **Also known as:** GHSA-m43h-5r7h-8gjg, GHSA-whh8-w65x-9fvx

## What is CVE-2026-89247?

CVE-2026-89247 is a medium-severity vulnerability in WWBN AVideo, published on 11 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

WWBN AVideo at commit c3edcc274c389816d434acadac07ee78eaf330c1 and earlier contains an XML injection vulnerability in plugin/AD_Server/VMAP.php, which is reachable without authentication when the AD_Server plugin is enabled. The script emits Content-Type: application/xml and writes the timeOffset and idTag values returned by AD_Server::getVMAPSFromRequest() directly into VMAP attributes without encoding. Those values originate from the base64- and JSON-decoded $_REQUEST['vmaps'] parameter, which is not covered by $securityFilter in objects/security.php. A remote attacker can craft a vmaps value (containing a non-empty VAST.campaing entry) and induce a user to open the resulting VMAP URL or a video page using it, injecting arbitrary <vmap:AdBreak> and <vmap:AdTagURI>/AdSource nodes into the generated XML. The player's IMA path (afterVideoJS -> PlayerSkins::setIMAADTag) then requests the attacker-supplied ad URLs, resulting in ad injection and cross-origin requests from the victim's playback session. The issue was unfixed at the time of reporting.

Weakness: CWE-91 (XML Injection)

## Which versions are affected by CVE-2026-89247?


## How do I fix CVE-2026-89247?

No fix has been published for CVE-2026-89247 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-89247 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-89247 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-89247 and fix it if it is affected.

What it is: CVE-2026-89247 is a medium-severity vulnerability in WWBN AVideo, published on 11 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-89247 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-2026-89247/ (Markdown: https://insights.sbomify.com/CVE-2026-89247/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-89247
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-89247
- OSV: https://osv.dev/vulnerability/CVE-2026-89247

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-89247/
Summaries are generated and may contain mistakes; the official description above is the record.