# CVE-2020-1767: Possible to send drafted messages as wrong agent

> An attacker can send drafted messages as another agent, disguising their identity to customers in the OTRS ticketing system.

- **Severity:** Low 3.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/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:** Yes
- **Published:** 10 Jan 2020
- **Updated:** 16 Sep 2024
- **Also known as:** DEBIAN-CVE-2020-1767, GHSA-xqvr-25w4-fgw8, UBUNTU-CVE-2020-1767

## What is CVE-2020-1767?

CVE-2020-1767 is a low-severity vulnerability in Debian Debian Linux, published on 10 Jan 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Agent A is able to save a draft (i.e. for customer reply). Then Agent B can open the draft, change the text completely and send it in the name of Agent A. For the customer it will not be visible that the message was sent by another agent. This issue affects: ((OTRS)) Community Edition 6.0.x version 6.0.24 and prior versions. OTRS 7.0.x version 7.0.13 and prior versions.

## Which versions are affected by CVE-2020-1767?

It affects 2 products.


Products: Debian Debian Linux, Otrs Otrs.

## How do I fix CVE-2020-1767?

Upgrade to a fixed version.

## Is CVE-2020-1767 being exploited?

There is no known exploitation of CVE-2020-1767 in the wild and no public exploit code.

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-1767 and fix it if it is affected.

What it is: CVE-2020-1767 is a low-severity vulnerability in Debian Debian Linux, published on 10 Jan 2020. 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-2020-1767 in the wild and no public exploit code.

Affected product: Debian Debian Linux. 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-2020-1767/ (Markdown: https://insights.sbomify.com/CVE-2020-1767/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-1767
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-1767
- OSV: https://osv.dev/vulnerability/CVE-2020-1767

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-1767/
Summaries are generated and may contain mistakes; the official description above is the record.