# CVE-2026-73195: Apache Syncope: CSV export spreadsheet formula injection

> Authenticated users can inject spreadsheet formulas into CSV exports, leading to code execution when the file is opened in a spreadsheet application.

- **Severity:** High 7.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 14 Sep 2026
- **Updated:** 14 Sep 2026
- **Also known as:** GHSA-3gg5-c8gj-frxr

## What is CVE-2026-73195?

CVE-2026-73195 is a high-severity vulnerability in Apache Syncope, published on 14 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Improper Encoding or Escaping of Output vulnerability in Apache Syncope.

Authenticated users can store a spreadsheet formula payload in one of their own plain attributes. When such users are included in a CSV export and the generated CSV file is opened by a spreadsheet application, the formula may be executed.

This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2.

Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.

Weakness: CWE-116 (Improper Encoding or Escaping of Output)

## Which versions are affected by CVE-2026-73195?


## How do I fix CVE-2026-73195?

No fix has been published for CVE-2026-73195 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-73195 being exploited?

There is no known exploitation of CVE-2026-73195 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-73195 and fix it if it is affected.

What it is: CVE-2026-73195 is a high-severity vulnerability in Apache Syncope, published on 14 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-73195 in the wild and no public exploit code.

Affected product: Apache Syncope. 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-2026-73195/ (Markdown: https://insights.sbomify.com/CVE-2026-73195/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-73195
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-73195
- OSV: https://osv.dev/vulnerability/CVE-2026-73195

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-73195/
Summaries are generated and may contain mistakes; the official description above is the record.