# CVE-2026-89148: AVideo Open Redirect via playlistSort.php Referer Header

> An unauthenticated attacker can redirect logged-in users to malicious sites via a crafted Referer header in playlistSort.php, enabling phishing and unauthorized playlist modifications.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 11 Sep 2026
- **Updated:** 11 Sep 2026
- **Also known as:** GHSA-jj4v-c999-cm2m, GHSA-vrxq-rm6h-6fq6

## What is CVE-2026-89148?

CVE-2026-89148 is a medium-severity vulnerability in WWBN AVideo, published on 11 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains an open redirect in objects/playlistSort.php. Because the endpoint is not a *.json.php script, AVideo's automatic CSRF guard (autoCSRFGuard()/forbidIfIsUntrustedRequest()) does not run, and when the request includes the sort parameter the script issues a Location header set to the unvalidated $_SERVER['HTTP_REFERER'] value without calling isSafeRedirectURL(). A remote unauthenticated attacker can therefore induce a logged-in user who can manage the targeted playlist to submit a cross-origin POST with a crafted Referer, causing the victim's playlist to be reordered and the victim's browser to be redirected from a trusted AVideo URL to an attacker-controlled site for phishing. No patched version is available.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2026-89148?


## How do I fix CVE-2026-89148?

No fix has been published for CVE-2026-89148 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-89148 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-89148 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-89148 and fix it if it is affected.

What it is: CVE-2026-89148 is a medium-severity vulnerability in WWBN AVideo, published on 11 Sep 2026. Any signed-in user can exploit it over the network, 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-2026-89148 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-2026-89148/ (Markdown: https://insights.sbomify.com/CVE-2026-89148/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-89148
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-89148
- OSV: https://osv.dev/vulnerability/CVE-2026-89148

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-89148/
Summaries are generated and may contain mistakes; the official description above is the record.