# CVE-2026-61573: AVideo-Encoder: reflected cross-site scripting in the login interface


- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 28 Oct 2026
- **Updated:** 29 Oct 2026
- **Also known as:** GHSA-p9x3-679g-pwf5

## What is CVE-2026-61573?

CVE-2026-61573 is a medium-severity vulnerability in WWBN AVideo-Encoder, published on 28 Oct 2026. 

### Official description

AVideo is a video-sharing Platform. Prior to 8.1.0, the anonymous login interface reflects request values into HTML and JavaScript without output encoding. In `view/index.php`, `webSiteRootURL` is returned verbatim by `Streamer::getStreamerURL()` in `objects/Streamer.php` and reaches navigation and form attributes; it also enters a single-quoted JavaScript string in `view/index.header.php`. It is not filtered by `objects/security.php`, while the `user` and `pass` fields are filtered only for single quotes, leaving double quotes and angle brackets capable of breaking out of their HTML attributes. In addition, `view/index.header.php` reflects POST fields using `json_encode` without `JSON_HEX_TAG`, allowing a closing script tag to break out, and `locale/function.php` stores the POST `lang` value in the session for unescaped reflection in `view/index.php`. An unauthenticated remote attacker who persuades a victim to open a crafted login link can execute arbitrary JavaScript in the encoder's origin. This can read the operator session identifier exposed in inline script, capture login credentials and perform actions as the operator against the encoder and its upstream platform. This issue is fixed in version 8.1.0.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-61573?


## How do I fix CVE-2026-61573?

No fix has been published for CVE-2026-61573 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-61573 being exploited?

There is no known exploitation of CVE-2026-61573 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-61573 and fix it if it is affected.

What it is: CVE-2026-61573 is a medium-severity vulnerability in WWBN AVideo-Encoder, published on 28 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-61573 in the wild and no public exploit code.

Affected product: WWBN AVideo-Encoder. 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-2026-61573/ (Markdown: https://insights.sbomify.com/CVE-2026-61573/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-61573
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-61573
- OSV: https://osv.dev/vulnerability/CVE-2026-61573

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-61573/
Summaries are generated and may contain mistakes; the official description above is the record.