# CVE-2025-10354: Reflected Cross-Site Scripting (XSS) in Semantic MediaWiki

> Attackers can execute arbitrary JavaScript in victims' browsers via a malicious URL, potentially stealing session cookies or performing actions on their behalf.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 21 Apr 2026
- **Updated:** 21 Apr 2026
- **Also known as:** GHSA-p2jw-3hf7-269m

## What is CVE-2025-10354?

CVE-2025-10354 is a medium-severity cross-site scripting vulnerability in Semantic MediaWiki, published on 21 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Cross-Site Scripting (XSS) vulnerability reflected in Semantic MediaWiki. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending them a malicious URL using the '/index.php/Speciaal:GefacetteerdZoeken' endpoint parameter. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.

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

## Which versions are affected by CVE-2025-10354?


## How do I fix CVE-2025-10354?

No fix has been published for CVE-2025-10354 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-10354 being exploited?

There is no known exploitation of CVE-2025-10354 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-10354 and fix it if it is affected.

What it is: CVE-2025-10354 is a medium-severity cross-site scripting vulnerability in Semantic MediaWiki, published on 21 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-10354 in the wild and no public exploit code.

Affected product: Semantic MediaWiki. 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-2025-10354/ (Markdown: https://insights.sbomify.com/CVE-2025-10354/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-10354
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-10354
- OSV: https://osv.dev/vulnerability/CVE-2025-10354

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-10354/
Summaries are generated and may contain mistakes; the official description above is the record.