# CVE-2026-9280: Ad Inserter <= 2.8.15 - Reflected Cross-Site Scripting via URL Parameters in iframe Mode

> Unauthenticated attackers can inject arbitrary scripts via URL parameters in iframe mode, requiring user interaction and specific configuration.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A: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:** 6 Jun 2026
- **Updated:** 6 Jun 2026
- **Also known as:** GHSA-m3rj-j76j-78jj

## What is CVE-2026-9280?

CVE-2026-9280 is a medium-severity cross-site scripting vulnerability in spacetime Ad Inserter – Ad Manager & AdSense Ads, published on 6 Jun 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 Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via URL Parameters in iframe Mode in all versions up to, and including, 2.8.15 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Exploitation requires that iframe mode (AI_OPTION_IFRAME) is enabled on at least one ad block displayed on the targeted page, which is a non-default but supported configuration commonly used for AdSense and JavaScript-based ads.

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

## Which versions are affected by CVE-2026-9280?


## How do I fix CVE-2026-9280?

No fix has been published for CVE-2026-9280 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-9280 being exploited?

There is no known exploitation of CVE-2026-9280 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-9280 and fix it if it is affected.

What it is: CVE-2026-9280 is a medium-severity cross-site scripting vulnerability in spacetime Ad Inserter – Ad Manager & AdSense Ads, published on 6 Jun 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-2026-9280 in the wild and no public exploit code.

Affected product: spacetime Ad Inserter – Ad Manager & AdSense Ads. 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-2026-9280/ (Markdown: https://insights.sbomify.com/CVE-2026-9280/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-9280
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-9280
- OSV: https://osv.dev/vulnerability/CVE-2026-9280

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-9280/
Summaries are generated and may contain mistakes; the official description above is the record.