# CVE-2026-27505: SVXportal <= 2.5 admin/user_action.php Stored XSS

> Unauthenticated attackers can inject JavaScript via registration fields that executes in administrators' browsers, potentially leading to account takeover.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/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:** 20 Feb 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-87jc-9r3r-58w8

## What is CVE-2026-27505?

CVE-2026-27505 is a medium-severity cross-site scripting vulnerability in sa2blv SVXportal, published on 20 Feb 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

SVXportal version 2.5 and prior contain a stored cross-site scripting vulnerability in the user registration workflow (index.php submitting to admin/user_action.php). User-supplied fields such as Firstname, lastname, and email are stored in the backend database without adequate output encoding and are later rendered in the administrator interface (admin/users.php), allowing an unauthenticated remote attacker to inject arbitrary JavaScript that executes in an administrator's browser upon viewing the affected page.

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

## Which versions are affected by CVE-2026-27505?

It affects 1 product.


Products: Radioinorr Svxportal.

## How do I fix CVE-2026-27505?

No fix has been published for CVE-2026-27505 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-27505 being exploited?

There is no known exploitation of CVE-2026-27505 in the wild and no public exploit code.

## Other vulnerabilities in sa2blv SVXportal

- [CVE-2026-27502](https://insights.sbomify.com/CVE-2026-27502/): SVXportal <= 2.5 log.php Search Reflected XSS (medium 5.1)
- [CVE-2026-27503](https://insights.sbomify.com/CVE-2026-27503/): SVXportal <= 2.5 admin/log.php Search Reflected XSS (medium 5.1)
- [CVE-2026-27504](https://insights.sbomify.com/CVE-2026-27504/): SVXportal <= 2.5 radiomobile_front.php stationid Reflected XSS (medium 5.1)
- [CVE-2026-27506](https://insights.sbomify.com/CVE-2026-27506/): SVXportal <= 2.5 Profile Update Stored XSS (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-27505 and fix it if it is affected.

What it is: CVE-2026-27505 is a medium-severity cross-site scripting vulnerability in sa2blv SVXportal, published on 20 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-27505 in the wild and no public exploit code.

Affected product: sa2blv SVXportal. 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-2026-27505/ (Markdown: https://insights.sbomify.com/CVE-2026-27505/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-27505
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-27505
- OSV: https://osv.dev/vulnerability/CVE-2026-27505

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-27505/
Summaries are generated and may contain mistakes; the official description above is the record.