# CVE-2026-48208: Denial-of-Service via SVG Rendering in Ticket

> Attackers can cause browser resource exhaustion and denial of service by injecting malicious SVG content into ticket emails, affecting OTRS agents and customers.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **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:** 1 Jun 2026
- **Updated:** 1 Jun 2026
- **Also known as:** GHSA-8xg9-c63w-vfj6

## What is CVE-2026-48208?

CVE-2026-48208 is a medium-severity denial of service vulnerability in Otrs Otrs, published on 1 Jun 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

An improper neutralization of active SVG content in OTRS or ((OTRS)) Community Edition ticket article rendering allows attackers to inject specially crafted SVG payloads via email content, leading to browser-side resource exhaustion and denial of service when affected tickets are opened by an agent or customer. The issue can be exploited without JavaScript execution and is not mitigated by the configured Content Security Policy (CSP).

This issue affects OTRS:

  *  7.0.X
  *  8.0.X
  *  2023.X
  *  2024.X
  *  2025.X
  *  2026.X before 2026.4.X

Please note that ((OTRS)) Community Edition 6.x and before are vulnerable. Products based on the ((OTRS)) Community Edition also very likely to be affected

Weakness: CWE-791 (Incomplete Filtering of Special Elements), CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2026-48208?

It affects 1 product.


Products: Otrs Otrs.

## How do I fix CVE-2026-48208?

No fix has been published for CVE-2026-48208 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-48208 being exploited?

There is no known exploitation of CVE-2026-48208 in the wild and no public exploit code.

Public exploit code:

- This is POC repo for CVE-2026-48208 (github_poc): https://github.com/Habuon/CVE-2026-48208

## Other vulnerabilities in Otrs Otrs

- [CVE-2026-48188](https://insights.sbomify.com/CVE-2026-48188/): SQL Injection via MySQL Quote Method (critical 9.1)
- [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)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-48208 and fix it if it is affected.

What it is: CVE-2026-48208 is a medium-severity denial of service vulnerability in Otrs Otrs, published on 1 Jun 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-2026-48208 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-2026-48208/ (Markdown: https://insights.sbomify.com/CVE-2026-48208/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-48208
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-48208
- OSV: https://osv.dev/vulnerability/CVE-2026-48208

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-48208/
Summaries are generated and may contain mistakes; the official description above is the record.