# CVE-2026-84388: Information disclosure in FortiPAM Chrome Extension

> An attacker can disclose information via a remote unauthenticated attack due to improper restriction of rendered UI layers in the FortiPAM Chrome Extension.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L/E:P/RL:O/RC:C`)
- **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:** 22 Sep 2026
- **Updated:** 26 Sep 2026
- **Also known as:** GHSA-x82f-3vjg-p954

## What is CVE-2026-84388?

CVE-2026-84388 is a critical vulnerability in Fortinet FortiPAM Chrome Extension, published on 22 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

A improper restriction of rendered ui layers or frames vulnerability in Fortinet FortiPAM Chrome Extension 8.0 all versions, FortiPAM Chrome Extension 7.4 all versions may allow attacker to information disclosure via remote unauthenticated attack

Weakness: CWE-1021 (Improper Restriction of Rendered UI Layers or Frames)

## Which versions are affected by CVE-2026-84388?


## How do I fix CVE-2026-84388?

No fix has been published for CVE-2026-84388 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-84388 being exploited?

There is no known exploitation of CVE-2026-84388 in the wild and no public exploit code.

Public exploit code:

- Improper Restriction of Rendered UI Layers or Frames (CWE-1021) (github_poc): https://github.com/ShadowForge-Cyber/CVE-2026-84388-POC

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-84388 and fix it if it is affected.

What it is: CVE-2026-84388 is a critical vulnerability in Fortinet FortiPAM Chrome Extension, published on 22 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-2026-84388 in the wild and no public exploit code.

Affected product: Fortinet FortiPAM Chrome Extension. 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-2026-84388/ (Markdown: https://insights.sbomify.com/CVE-2026-84388/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-84388
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-84388
- OSV: https://osv.dev/vulnerability/CVE-2026-84388

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-84388/
Summaries are generated and may contain mistakes; the official description above is the record.