# CVE-2026-1136: lcg0124 BootDo ContentController save cross site scripting

> Remote attackers can execute arbitrary scripts via cross-site scripting in the BootDo ContentController save function, potentially compromising user sessions.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 Jan 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-f4vw-wpg8-p532

## What is CVE-2026-1136?

CVE-2026-1136 is a medium-severity cross-site scripting vulnerability in lcg0124 BootDo, published on 19 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A weakness has been identified in lcg0124 BootDo up to e93dd428ef6f5c881aa74d49a2099ab0cf1e0fcb. Affected is the function Save of the file /blog/bContent/save of the component ContentController. This manipulation of the argument content/author/title causes cross site scripting. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. This product follows a rolling release approach for continuous delivery, so version details for affected or updated releases are not provided.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-1136?


## How do I fix CVE-2026-1136?

No fix has been published for CVE-2026-1136 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-1136 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1136 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-1136 and fix it if it is affected.

What it is: CVE-2026-1136 is a medium-severity cross-site scripting vulnerability in lcg0124 BootDo, published on 19 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1136 exists.

Affected product: lcg0124 BootDo. 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-2026-1136/ (Markdown: https://insights.sbomify.com/CVE-2026-1136/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-1136
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-1136
- OSV: https://osv.dev/vulnerability/CVE-2026-1136

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-1136/
Summaries are generated and may contain mistakes; the official description above is the record.