# CVE-2026-100749: Joomla Extension - svenbluege.de - CSRF in backend cleanup actions in Event Gallery extension < 6.5.0

> Attackers can trick admins into deleting orphaned files and old shopping carts via CSRF in the Event Gallery extension.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Sep 2026
- **Updated:** 30 Sep 2026
- **Also known as:** GHSA-2hrp-jfc8-328g

## What is CVE-2026-100749?

CVE-2026-100749 is a medium-severity vulnerability in svenbluege.de Event Gallery for Joomla, published on 27 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Joomla Extension - svenbluege.de - CSRF in backend cleanup actions in Event Gallery extension < 6.5.0 - Only orphaned file entries and shopping carts that are older than 30 days will be deleted.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2026-100749?

It affects 1 product.


Products: Svenbluege Event Gallery.

## How do I fix CVE-2026-100749?

No fix has been published for CVE-2026-100749 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-100749 being exploited?

There is no known exploitation of CVE-2026-100749 in the wild and no public exploit code.

## Other vulnerabilities in svenbluege.de Event Gallery for Joomla

- [CVE-2026-97164](https://insights.sbomify.com/CVE-2026-97164/): Joomla Extension - svenbluege.de - Path Traversal in Clear Cache task in Event Gallery extension < 6.5.0 (high 7.0)
- [CVE-2026-100748](https://insights.sbomify.com/CVE-2026-100748/): Joomla Extension - svenbluege.de - CSRF in various cart actions in Event Gallery extension < 6.5.0 (medium 6.9)
- [CVE-2026-102777](https://insights.sbomify.com/CVE-2026-102777/): Server-side request forgery in Event Gallery for Joomla (medium 6.3)
- [CVE-2026-102778](https://insights.sbomify.com/CVE-2026-102778/): Cross-site scripting in Event Gallery for Joomla (medium 5.3)
- [CVE-2026-97165](https://insights.sbomify.com/CVE-2026-97165/): Joomla Extension - svenbluege.de - Reflected XSS and open redirect in Event Gallery extension < 6.5.0 (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-100749 and fix it if it is affected.

What it is: CVE-2026-100749 is a medium-severity vulnerability in svenbluege.de Event Gallery for Joomla, published on 27 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-100749 in the wild and no public exploit code.

Affected product: svenbluege.de Event Gallery for Joomla. 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-2026-100749/ (Markdown: https://insights.sbomify.com/CVE-2026-100749/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-100749
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-100749
- OSV: https://osv.dev/vulnerability/CVE-2026-100749

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-100749/
Summaries are generated and may contain mistakes; the official description above is the record.