# CVE-2026-48543: Krayin CRM 2.2.6 Stored Template Injection XSS via Web Form Description

> Authenticated attackers can execute arbitrary JavaScript in other users' browsers via stored template injection in web form descriptions.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`)
- **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:** 24 Sep 2026
- **Updated:** 25 Sep 2026
- **Also known as:** GHSA-vgpf-4rhc-gr38

## What is CVE-2026-48543?

CVE-2026-48543 is a medium-severity cross-site scripting vulnerability in krayin laravel-crm, published on 24 Sep 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

Krayin CRM through 2.2.6 contains a stored client-side template injection vulnerability that allows authenticated attackers to execute arbitrary JavaScript in other users' browsers by injecting Vue.js template expressions into the web form description field. Attackers can craft a web form description containing double-brace template syntax that reaches the Vue template compiler, enabling prototype chain traversal to retrieve the Function constructor and execute attacker-supplied JavaScript in the application origin for every user who views the affected web form.

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

## Which versions are affected by CVE-2026-48543?


## How do I fix CVE-2026-48543?

No fix has been published for CVE-2026-48543 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-48543 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-48543 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-48543 and fix it if it is affected.

What it is: CVE-2026-48543 is a medium-severity cross-site scripting vulnerability in krayin laravel-crm, published on 24 Sep 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-2026-48543 exists.

Affected product: krayin laravel-crm. 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-2026-48543/ (Markdown: https://insights.sbomify.com/CVE-2026-48543/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-48543
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-48543
- OSV: https://osv.dev/vulnerability/CVE-2026-48543

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-48543/
Summaries are generated and may contain mistakes; the official description above is the record.