# CVE-2026-48188: SQL Injection via MySQL Quote Method

> Unauthenticated SQL injection in OTRS allows authentication bypass when MySQL NO_BACKSLASH_ESCAPES mode is enabled.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 1 Jun 2026
- **Updated:** 1 Jun 2026
- **Also known as:** DEBIAN-CVE-2026-48188, GHSA-4vhj-5qc2-97wr, UBUNTU-CVE-2026-48188

## What is CVE-2026-48188?

CVE-2026-48188 is a critical SQL injection vulnerability in Otrs Otrs, published on 1 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An improper Input Validation vulnerability in OTRS or ((OTRS)) Community Edition database layer module allows an unauthenticated SQL injection which can lead to an authentication bypass. This issue only affects the system if the MySQL/MariaDB server is configured with the NO_BACKSLASH_ESCAPES SQL mode.

This issue affects OTRS: 

  *  7.0.X
  *  8.0.X
  *  2023.X
  *  2024.X
  *  2025.X
  *  2026.X before 2026.4.X
  *  (OTRS)) Community Edition: 6.0.x

Products based on the ((OTRS)) Community Edition also very likely to be affected

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2026-48188?

It affects 1 product.


Products: Otrs Otrs.

## How do I fix CVE-2026-48188?

Upgrade to a fixed version.

## Is CVE-2026-48188 being exploited?

There is no known exploitation of CVE-2026-48188 in the wild and no public exploit code.

Public exploit code:

- This is POC repo for CVE-2026-48188 (github_poc): https://github.com/Habuon/CVE-2026-48188

## Other vulnerabilities in Otrs Otrs

- [CVE-2013-4717](https://insights.sbomify.com/CVE-2013-4717/): SQL injection in n/a (high 8.8)
- [CVE-2017-14635](https://insights.sbomify.com/CVE-2017-14635/): Code injection in n/a (high 8.8)
- [CVE-2023-5422](https://insights.sbomify.com/CVE-2023-5422/): SSL Certificates are not checked for E-Mail Handling (high 8.7)
- [CVE-2023-6254](https://insights.sbomify.com/CVE-2023-6254/): Password is send back to client (high 8.1)
- [CVE-2023-2534](https://insights.sbomify.com/CVE-2023-2534/): Information disclouse and DoS via websocket push events (high 7.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-48188 and fix it if it is affected.

What it is: CVE-2026-48188 is a critical SQL injection vulnerability in Otrs Otrs, published on 1 Jun 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-2026-48188 in the wild and no public exploit code.

Affected product: Otrs Otrs. 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-2026-48188/ (Markdown: https://insights.sbomify.com/CVE-2026-48188/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-48188
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-48188
- OSV: https://osv.dev/vulnerability/CVE-2026-48188

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-48188/
Summaries are generated and may contain mistakes; the official description above is the record.