# CVE-2026-15404: Bulk Page Generator <= 2.5.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Title

> Authenticated attackers can inject scripts via post titles that execute in admin sessions, potentially leading to account takeover.

- **Severity:** Medium 6.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Jul 2026
- **Updated:** 23 Jul 2026
- **Also known as:** GHSA-8w85-6hx8-qc3f

## What is CVE-2026-15404?

CVE-2026-15404 is a medium-severity cross-site scripting vulnerability in niklaslindemann Bulk Page Generator – LPagery, published on 23 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Lpagery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via post titles in versions up to, and including, 2.5.7. This is due to insufficient input sanitization and output escaping in the lpagery_add_filter_text_template_post() function, which is hooked to admin_footer and echoes the raw post_title of the post referenced by the ?lpagery_template query parameter directly inside a JavaScript single-quoted string literal, without esc_js(), esc_html(), or any other encoding. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a higher-privileged user (such as an administrator) accesses an admin page with the ?lpagery_template=<post_id> parameter pointing at the attacker's post.

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

## Which versions are affected by CVE-2026-15404?


## How do I fix CVE-2026-15404?

No fix has been published for CVE-2026-15404 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15404 being exploited?

There is no known exploitation of CVE-2026-15404 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15404 and fix it if it is affected.

What it is: CVE-2026-15404 is a medium-severity cross-site scripting vulnerability in niklaslindemann Bulk Page Generator – LPagery, published on 23 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-15404 in the wild and no public exploit code.

Affected product: niklaslindemann Bulk Page Generator – LPagery. 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-2026-15404/ (Markdown: https://insights.sbomify.com/CVE-2026-15404/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15404
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15404
- OSV: https://osv.dev/vulnerability/CVE-2026-15404

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-15404/
Summaries are generated and may contain mistakes; the official description above is the record.