# CVE-2018-16277: XWiki XSS Vulnerability

> Cross-site scripting vulnerability in XWiki's Image Import function allows attackers to inject malicious scripts.

- **Severity:** Medium 5.4 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 28 Sep 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-6mvr-cq72-f66v

## What is CVE-2018-16277?

CVE-2018-16277 is a medium-severity cross-site scripting vulnerability in Xwiki Xwiki, published on 28 Sep 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The Image Import function in XWiki through 10.7 has XSS.

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

## Which versions are affected by CVE-2018-16277?

2 open source packages ship an affected version, including org.xwiki.platform:xwiki-platform. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.xwiki.platform:xwiki-platform` | Maven | All versions to 10.7 | None |
| `org.xwiki.platform:xwiki-platform` | Maven | All versions to 10.7 | None |

Products: Xwiki Xwiki.

## How do I fix CVE-2018-16277?

No fix has been published for CVE-2018-16277 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-16277 being exploited?

There is no known exploitation of CVE-2018-16277 in the wild and no public exploit code.

## Other vulnerabilities in Xwiki Xwiki

- [CVE-2025-24893](https://insights.sbomify.com/CVE-2025-24893/): XWiki Platform Eval Injection (critical 9.8, exploited in the wild)
- [CVE-2025-53836](https://insights.sbomify.com/CVE-2025-53836/): XWiki Rendering is vulnerable to RCE attacks when processing nested macros (critical 10.0)
- [CVE-2024-55662](https://insights.sbomify.com/CVE-2024-55662/): XWiki allows remote code execution through the extension sheet (critical 10.0)
- [CVE-2024-55877](https://insights.sbomify.com/CVE-2024-55877/): XWiki allows remote code execution from account through macro descriptions and XWiki.XWikiSyntaxMacrosList (critical 10.0)
- [CVE-2024-37901](https://insights.sbomify.com/CVE-2024-37901/): XWiki Platform vulnerable to remote code execution from account via SearchSuggestConfigSheet (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-16277 and fix it if it is affected.

What it is: CVE-2018-16277 is a medium-severity cross-site scripting vulnerability in Xwiki Xwiki, published on 28 Sep 2018. 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-2018-16277 in the wild and no public exploit code.

Affected packages and fixed versions:
- org.xwiki.platform:xwiki-platform (Maven): affected all versions up to 10.7; no fix listed
- org.xwiki.platform:xwiki-platform (Maven): affected all versions up to 10.7; no fix listed

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-2018-16277/ (Markdown: https://insights.sbomify.com/CVE-2018-16277/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-16277
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-16277
- OSV: https://osv.dev/vulnerability/CVE-2018-16277

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-16277/
Summaries are generated and may contain mistakes; the official description above is the record.