# CVE-2026-85677: Gutenverse News < 3.3.3 - Unauthenticated Stored XSS via Comment Content

> Unauthenticated attackers can inject JavaScript via comments, leading to code execution in admin browsers and potential account takeover.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **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:** 11 Sep 2026
- **Also known as:** GHSA-wg2r-37mx-8x45

## What is CVE-2026-85677?

CVE-2026-85677 is a high-severity cross-site scripting vulnerability in Unknown Gutenverse News, 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

The Gutenverse News  WordPress plugin before 3.3.3 does not restrict the extra HTML it adds to WordPress's allowed elements to the context it is meant for, applying the same relaxed list to every sanitisation context including untrusted comments, allowing unauthenticated users to store JavaScript that will execute in the browser of any administrator who reviews the comment queue, and of any visitor to the post once the comment is approved.

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

## Which versions are affected by CVE-2026-85677?


## How do I fix CVE-2026-85677?

No fix has been published for CVE-2026-85677 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-85677 being exploited?

There is no known exploitation of CVE-2026-85677 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-85677 and fix it if it is affected.

What it is: CVE-2026-85677 is a high-severity cross-site scripting vulnerability in Unknown Gutenverse News, 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: There is no known exploitation of CVE-2026-85677 in the wild and no public exploit code.

Affected product: Unknown Gutenverse News. 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-2026-85677/ (Markdown: https://insights.sbomify.com/CVE-2026-85677/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-85677
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-85677
- OSV: https://osv.dev/vulnerability/CVE-2026-85677

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-85677/
Summaries are generated and may contain mistakes; the official description above is the record.