# CVE-2026-93581: Insufficient Neutralization of Formula Elements in CSV Exports

> Attackers can inject malicious spreadsheet formulas into CSV exports, potentially causing code execution or data disclosure when users open the files.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **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:** 12 Oct 2026
- **Updated:** 15 Oct 2026
- **Also known as:** GHSA-r7mj-m7cq-4q83, UBUNTU-CVE-2026-93581

## What is CVE-2026-93581?

CVE-2026-93581 is a medium-severity vulnerability in ((OTRS)) Community Edition, published on 12 Oct 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

User-controlled values are not sufficiently neutralized when included in CSV exports. Values originating from user input, including data submitted by authenticated users or received through external communication channels such as email, may be stored in fields that are later included in CSV exports. An attacker can therefore inject values beginning with spreadsheet formula characters such as =, +, -, or @. An attacker does not necessarily require an authenticated account if the affected field can be populated through an external input channel such as incoming email.

When an affected CSV file is opened in spreadsheet software, the application may interpret these values as formulas instead of plain text. Depending on the spreadsheet application and its security configuration, a malicious formula may cause unintended actions, disclose information, or invoke external functionality. Exploitation may require the user opening the exported CSV file to confirm one or more security warning dialogs. The vulnerability does not execute code on the OTRS server; any additional impact occurs in the spreadsheet application used to process the exported file.

This issue affects OTRS:

  *  7.0.X
  *  8.0.X
  *  2023.X
  *  2024.X
  *  2025.X
  *  2026.X before 2026.7.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-1236 (Improper Neutralization of Formula Elements in a CSV File)

## Which versions are affected by CVE-2026-93581?


## How do I fix CVE-2026-93581?

No fix has been published for CVE-2026-93581 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-93581 being exploited?

There is no known exploitation of CVE-2026-93581 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-93581 and fix it if it is affected.

What it is: CVE-2026-93581 is a medium-severity vulnerability in ((OTRS)) Community Edition, published on 12 Oct 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-2026-93581 in the wild and no public exploit code.

Affected product: ((OTRS)) Community Edition. 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-2026-93581/ (Markdown: https://insights.sbomify.com/CVE-2026-93581/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-93581
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-93581
- OSV: https://osv.dev/vulnerability/CVE-2026-93581

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-93581/
Summaries are generated and may contain mistakes; the official description above is the record.