# CVE-2026-0308: PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface

> A malicious authenticated administrator can execute JavaScript payloads via the PAN-OS web interface, potentially compromising the firewall management console.

- **Severity:** Low 1.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber`)
- **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:** 10 Sep 2026
- **Updated:** 15 Oct 2026
- **Also known as:** GHSA-c76w-v7qc-mx3r

## What is CVE-2026-0308?

CVE-2026-0308 is a low-severity cross-site scripting vulnerability in Palo Alto Networks Cloud NGFW, published on 10 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store or execute a JavaScript payload using the web interface. 

This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series). 

Cloud NGFW and Prisma® Access are not affected by this vulnerability.

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

## Which versions are affected by CVE-2026-0308?


## How do I fix CVE-2026-0308?

No fix has been published for CVE-2026-0308 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-0308 being exploited?

There is no known exploitation of CVE-2026-0308 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-0308 and fix it if it is affected.

What it is: CVE-2026-0308 is a low-severity cross-site scripting vulnerability in Palo Alto Networks Cloud NGFW, published on 10 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-2026-0308 in the wild and no public exploit code.

Affected product: Palo Alto Networks Cloud NGFW. 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-2026-0308/ (Markdown: https://insights.sbomify.com/CVE-2026-0308/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-0308
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-0308
- OSV: https://osv.dev/vulnerability/CVE-2026-0308

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-0308/
Summaries are generated and may contain mistakes; the official description above is the record.