# CVE-2026-84931: Joli Table Of Contents < 3.0.3 - Author+ Stored XSS via joli-toc Shortcode Theme Attribute

> Authors can inject JavaScript via shortcode attributes, leading to code execution in administrators' browsers and potential privilege escalation.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 5 Sep 2026
- **Updated:** 6 Sep 2026
- **Also known as:** GHSA-m8wm-hf9g-3f6p

## What is CVE-2026-84931?

CVE-2026-84931 is a medium-severity cross-site scripting vulnerability in Unknown Joli Table Of Contents, published on 5 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

The Joli Table Of Contents WordPress plugin before 3.0.3 does not sanitise or escape a shortcode attribute value before outputting it inside an HTML element's attribute, allowing users with the Author role and above to inject arbitrary HTML attributes and JavaScript that execute in the browser of any user who views the post, including higher-privileged users such as administrators. This crosses a privilege boundary even on multisite, where such users are not permitted to post unfiltered HTML.

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

## Which versions are affected by CVE-2026-84931?


## How do I fix CVE-2026-84931?

No fix has been published for CVE-2026-84931 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-84931 being exploited?

There is no known exploitation of CVE-2026-84931 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-84931 and fix it if it is affected.

What it is: CVE-2026-84931 is a medium-severity cross-site scripting vulnerability in Unknown Joli Table Of Contents, published on 5 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-84931 in the wild and no public exploit code.

Affected product: Unknown Joli Table Of Contents. 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-2026-84931/ (Markdown: https://insights.sbomify.com/CVE-2026-84931/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-84931
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-84931
- OSV: https://osv.dev/vulnerability/CVE-2026-84931

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-84931/
Summaries are generated and may contain mistakes; the official description above is the record.