# CVE-2023-45207: Cross-site scripting in n/a

> Attackers can execute malicious JavaScript via PDF attachments in Zimbra webmail, potentially leading to account takeover.

- **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:** 13 Feb 2024
- **Updated:** 27 Mar 2025
- **Also known as:** GHSA-gc2m-7496-w444

## What is CVE-2023-45207?

CVE-2023-45207 is a medium-severity cross-site scripting vulnerability in n/a, published on 13 Feb 2024. 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 issue was discovered in Zimbra Collaboration (ZCS) 8.8.15, 9.0, and 10.0. An attacker can send a PDF document through mail that contains malicious JavaScript. While previewing this file in webmail in the Chrome browser, the stored XSS payload is executed. (This has been mitigated by sanitising the JavaScript code present in a PDF document.)

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2023-45207?

It affects 1 product.


Products: Zimbra Collaboration.

## How do I fix CVE-2023-45207?

No fix has been published for CVE-2023-45207 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-45207 being exploited?

There is no known exploitation of CVE-2023-45207 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2024-27443](https://insights.sbomify.com/CVE-2024-27443/): Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) (medium 6.1, exploited in the wild)
- [CVE-2023-29381](https://insights.sbomify.com/CVE-2023-29381/): Privilege escalation in n/a (critical 9.8)
- [CVE-2023-29382](https://insights.sbomify.com/CVE-2023-29382/): Code injection in n/a (critical 9.8)
- [CVE-2022-32294](https://insights.sbomify.com/CVE-2022-32294/): Information disclosure in n/a (critical 9.8)
- [CVE-2021-35209](https://insights.sbomify.com/CVE-2021-35209/): Server-side request forgery in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-45207 and fix it if it is affected.

What it is: CVE-2023-45207 is a medium-severity cross-site scripting vulnerability in n/a, published on 13 Feb 2024. 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-2023-45207 in the wild and no public exploit code.

Affected product: n/a. 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-2023-45207/ (Markdown: https://insights.sbomify.com/CVE-2023-45207/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-45207
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-45207
- OSV: https://osv.dev/vulnerability/CVE-2023-45207

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-45207/
Summaries are generated and may contain mistakes; the official description above is the record.