# CVE-2026-82655: Admidio before 5.0.12 SQL Injection via relation_type_list

> Unauthenticated attackers can exploit a blind SQL injection in Admidio to extract database contents, including password hashes and user credentials.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/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:** 30 Aug 2026
- **Updated:** 31 Aug 2026
- **Also known as:** GHSA-4rc8-26x9-r9p2, GHSA-p5cp-mhvx-w392

## What is CVE-2026-82655?

CVE-2026-82655 is a high-severity SQL injection vulnerability in admidio, published on 30 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Admidio before 5.0.12 contains a blind SQL injection vulnerability in the relation_type_list parameter of lists_show.php that allows unauthenticated attackers to execute arbitrary SQL queries. Attackers can bypass authentication by providing a dummy UUID in role_list and inject SQL through relation_type_list to extract database contents including password hashes and user credentials.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2026-82655?


## How do I fix CVE-2026-82655?

No fix has been published for CVE-2026-82655 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-82655 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82655 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-82655 and fix it if it is affected.

What it is: CVE-2026-82655 is a high-severity SQL injection vulnerability in admidio, published on 30 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82655 exists.

Affected product: admidio. 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-2026-82655/ (Markdown: https://insights.sbomify.com/CVE-2026-82655/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-82655
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-82655
- OSV: https://osv.dev/vulnerability/CVE-2026-82655

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-82655/
Summaries are generated and may contain mistakes; the official description above is the record.