# CVE-2026-56096: Information Disclosure in extension "Apache Solr for TYPO3 - Enterprise Search" (solr)

> Remote attackers can extract indexed data from Apache Solr via TYPO3 extension by exploiting unrestricted query syntax, leading to information disclosure.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Aug 2026
- **Updated:** 17 Sep 2026
- **Also known as:** GHSA-j7mc-f926-6v4q

## What is CVE-2026-56096?

CVE-2026-56096 is a medium-severity vulnerability in Extension "Apache Solr for TYPO3 - Enterprise Search", published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The extension passes the user-supplied search query parameter to Apache Solr without restricting advanced Solr query syntax such as wildcards, field selectors and range queries. A remote, unauthenticated attacker can use this syntax to enumerate indexed field names and extract their stored values through boolean- and range-based blind extraction techniques, independent of any site-specific configuration.

Weakness: CWE-943 (Improper Neutralization of Special Elements in Data Query Logic)

## Which versions are affected by CVE-2026-56096?


## How do I fix CVE-2026-56096?

No fix has been published for CVE-2026-56096 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-56096 being exploited?

There is no known exploitation of CVE-2026-56096 in the wild and no public exploit code.

Public exploit code:

- Proof of Concept and Write-up for CVE-2026-56096 (Blind Parameter Injection in TYPO3 EXT:solr) (github_poc): https://github.com/yairHinkis/CVE-2026-56096

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-56096 and fix it if it is affected.

What it is: CVE-2026-56096 is a medium-severity vulnerability in Extension "Apache Solr for TYPO3 - Enterprise Search", published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-56096 in the wild and no public exploit code.

Affected product: Extension "Apache Solr for TYPO3 - Enterprise Search". 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-2026-56096/ (Markdown: https://insights.sbomify.com/CVE-2026-56096/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-56096
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-56096
- OSV: https://osv.dev/vulnerability/CVE-2026-56096

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-56096/
Summaries are generated and may contain mistakes; the official description above is the record.