# CVE-2022-4819: HotCRP cross site scripting

> An attacker can inject malicious scripts into HotCRP, potentially leading to code execution or account takeover.

- **Severity:** Low 2.4 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 28 Dec 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-x54c-wvwr-mxp3

## What is CVE-2022-4819?

CVE-2022-4819 is a low-severity cross-site scripting vulnerability in HotCRP, published on 28 Dec 2022. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

A vulnerability was found in HotCRP. It has been rated as problematic. Affected by this issue is some unknown functionality. The manipulation leads to cross site scripting. The attack may be launched remotely. The name of the patch is d4ffdb0ef806453c54ddca7fdda3e5c60356285c. It is recommended to apply a patch to fix this issue. VDB-216998 is the identifier assigned to this vulnerability.

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

## Which versions are affected by CVE-2022-4819?

It affects 1 product.


Products: Hotcrp Hotcrp.

## How do I fix CVE-2022-4819?

No fix has been published for CVE-2022-4819 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-4819 being exploited?

There is no known exploitation of CVE-2022-4819 in the wild and no public exploit code.

## Other vulnerabilities in HotCRP

- [CVE-2026-23836](https://insights.sbomify.com/CVE-2026-23836/): HotCRP vulnerable to remote code execution through formulas (critical 10.0)
- [CVE-2026-25156](https://insights.sbomify.com/CVE-2026-25156/): HotCRP vulnerable to stored XSS via comment attachments (high 7.3)
- [CVE-2026-23878](https://insights.sbomify.com/CVE-2026-23878/): HotCRP vulnerable to exposure of submitted documents (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-4819 and fix it if it is affected.

What it is: CVE-2022-4819 is a low-severity cross-site scripting vulnerability in HotCRP, published on 28 Dec 2022. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2022-4819 in the wild and no public exploit code.

Affected product: HotCRP. 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-2022-4819/ (Markdown: https://insights.sbomify.com/CVE-2022-4819/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-4819
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-4819
- OSV: https://osv.dev/vulnerability/CVE-2022-4819

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-4819/
Summaries are generated and may contain mistakes; the official description above is the record.