# CVE-2018-16773: Cross-site scripting in n/a

> EasyCMS allows cross-site scripting via the admin fields update content field, potentially enabling session hijacking or malicious script execution.

- **Severity:** Medium 4.8 (`CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 10 Sep 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-5cq6-j3hg-gxhm

## What is CVE-2018-16773?

CVE-2018-16773 is a medium-severity cross-site scripting vulnerability in n/a, published on 10 Sep 2018. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

EasyCMS 1.5 allows XSS via the index.php?s=/admin/fields/update/navTabId/listfields/callbackType/closeCurrent content field.

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

## Which versions are affected by CVE-2018-16773?

It affects 1 product.


Products: Easycms Easycms.

## How do I fix CVE-2018-16773?

No fix has been published for CVE-2018-16773 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-16773 being exploited?

There is no known exploitation of CVE-2018-16773 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-23358](https://insights.sbomify.com/CVE-2022-23358/): SQL injection in n/a (critical 9.8)
- [CVE-2020-24271](https://insights.sbomify.com/CVE-2020-24271/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2019-6294](https://insights.sbomify.com/CVE-2019-6294/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2018-16345](https://insights.sbomify.com/CVE-2018-16345/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2026-1105](https://insights.sbomify.com/CVE-2026-1105/): EasyCMS UserAction.class.php sql injection (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-16773 and fix it if it is affected.

What it is: CVE-2018-16773 is a medium-severity cross-site scripting vulnerability in n/a, published on 10 Sep 2018. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-16773 in the wild and no public exploit code.

Affected product: n/a. 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-2018-16773/ (Markdown: https://insights.sbomify.com/CVE-2018-16773/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-16773
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-16773
- OSV: https://osv.dev/vulnerability/CVE-2018-16773

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-16773/
Summaries are generated and may contain mistakes; the official description above is the record.