# CVE-2021-43973: File upload in n/a

> Remote authenticated attackers can upload arbitrary files to SysAid ITIL, potentially leading to code execution or data exposure.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Jan 2022
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-m73m-6ff8-fwgm

## What is CVE-2021-43973?

CVE-2021-43973 is a high-severity vulnerability in n/a, published on 11 Jan 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

An unrestricted file upload vulnerability in /UploadPsIcon.jsp in SysAid ITIL 20.4.74 b10 allows a remote authenticated attacker to upload an arbitrary file via the file parameter in the HTTP POST body. A successful request returns the absolute, server-side filesystem path of the uploaded file.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2021-43973?

It affects 1 product.


Products: Sysaid Sysaid.

## How do I fix CVE-2021-43973?

No fix has been published for CVE-2021-43973 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-43973 being exploited?

There is no known exploitation of CVE-2021-43973 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-47246](https://insights.sbomify.com/CVE-2023-47246/): SysAid Server Path Traversal (critical 9.8, exploited in the wild)
- [CVE-2025-2775](https://insights.sbomify.com/CVE-2025-2775/): SysAid On-Prem Improper Restriction of XML External Entity Reference (critical 9.3, exploited in the wild)
- [CVE-2025-2776](https://insights.sbomify.com/CVE-2025-2776/): SysAid On-Prem Improper Restriction of XML External Entity Reference (critical 9.3, exploited in the wild)
- [CVE-2024-36393](https://insights.sbomify.com/CVE-2024-36393/): SysAid - CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') (critical 9.9)
- [CVE-2025-2777](https://insights.sbomify.com/CVE-2025-2777/): SysAid On-Prem <= 23.3.40 lshw Proceessing XML External Entity Injection (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-43973 and fix it if it is affected.

What it is: CVE-2021-43973 is a high-severity vulnerability in n/a, published on 11 Jan 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-43973 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-2021-43973/ (Markdown: https://insights.sbomify.com/CVE-2021-43973/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-43973
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-43973
- OSV: https://osv.dev/vulnerability/CVE-2021-43973

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-43973/
Summaries are generated and may contain mistakes; the official description above is the record.