# CVE-2026-100176: Stored Cross-Site Scripting (XSS) in AIL Framework Username Timeline Tooltip

> Stored XSS in AIL Framework allows attackers to execute arbitrary JavaScript in an analyst's browser via crafted usernames, leading to session hijacking or data exfiltration.

- **Severity:** High 8.5 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/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:** 25 Sep 2026
- **Updated:** 25 Sep 2026
- **Also known as:** GHSA-gr26-vj67-v262

## What is CVE-2026-100176?

CVE-2026-100176 is a high-severity cross-site scripting vulnerability in ail framework, published on 25 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 AIL Framework's username timeline feature is vulnerable to stored cross-site scripting (XSS). Usernames imported from chats and crawled forums are stored without character restrictions. When an authenticated analyst views the username timeline, the application renders these stored usernames into the DOM using D3's html() method in the tooltip. Because the username value (d.obj) is interpolated directly into an HTML string without sanitization, a crafted username containing HTML event handlers (e.g., <img src=x onerror=alert(1)>) will execute arbitrary JavaScript in the analyst's browser when the analyst hovers over the corresponding timeline entry. The attack requires the victim to be an authenticated analyst with access to the timeline view and to interact with the malicious timeline entry (hover). Successful exploitation can lead to session hijacking, data exfiltration, or unauthorized actions performed within the analyst's authenticated session. The vulnerability resides in the client-side JavaScript file var/www/static/js/d3/timeline_basic.js.

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

## Which versions are affected by CVE-2026-100176?


## How do I fix CVE-2026-100176?

No fix has been published for CVE-2026-100176 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-100176 being exploited?

There is no known exploitation of CVE-2026-100176 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-100176 and fix it if it is affected.

What it is: CVE-2026-100176 is a high-severity cross-site scripting vulnerability in ail framework, published on 25 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-2026-100176 in the wild and no public exploit code.

Affected product: ail framework. 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-2026-100176/ (Markdown: https://insights.sbomify.com/CVE-2026-100176/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-100176
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-100176
- OSV: https://osv.dev/vulnerability/CVE-2026-100176

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-100176/
Summaries are generated and may contain mistakes; the official description above is the record.