# CVE-2023-41471: Cross-site scripting in n/a

> A local attacker with write access can execute arbitrary code via XSS in the WEEKEND-PLANS function of copyparty.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 29 Aug 2025
- **Updated:** 3 Nov 2025
- **Also known as:** GHSA-4mcf-c9v4-fpcr, PYSEC-2025-240

## What is CVE-2023-41471?

CVE-2023-41471 is a high-severity cross-site scripting vulnerability in n/a, published on 29 Aug 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Cross Site Scripting vulnerability in copyparty before 1.9.2 allows a local attacker to execute arbitrary code via a crafted payload to the WEEKEND-PLANS function. NOTE: this is disputed because WEEKEND-PLANS is accessible only to actors who already have write access to the server, and they can more simply upload HTML files containing JavaScript.

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

## Which versions are affected by CVE-2023-41471?

1 open source package ship an affected version, including copyparty. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `copyparty` | PyPI | All versions to 1.9.1 | None |

Products: 9001 Copyparty.

## How do I fix CVE-2023-41471?

No fix has been published for CVE-2023-41471 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-41471 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-41471 exists.

## Other vulnerabilities in n/a

- [CVE-2025-54796](https://insights.sbomify.com/CVE-2025-54796/): Copyparty is vulnerable to Regex Denial of Service (ReDoS) attacks through "Recent Uploads" page (high 7.5)
- [CVE-2023-37474](https://insights.sbomify.com/CVE-2023-37474/): Path traversal in copyparty (high 7.5)
- [CVE-2025-54589](https://insights.sbomify.com/CVE-2025-54589/): copyparty Reflected XSS via Filter Parameter (medium 6.3)
- [CVE-2023-38501](https://insights.sbomify.com/CVE-2023-38501/): copyparty vulnerable to reflected cross-site scripting via k304 parameter (medium 6.3)
- [CVE-2026-27948](https://insights.sbomify.com/CVE-2026-27948/): Copyparty vulnerable to eflected cross-site scripting via setck parameter (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-41471 and fix it if it is affected.

What it is: CVE-2023-41471 is a high-severity cross-site scripting vulnerability in n/a, published on 29 Aug 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-41471 exists.

Affected packages and fixed versions:
- copyparty (PyPI): affected all versions up to 1.9.1; no fix listed

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-2023-41471/ (Markdown: https://insights.sbomify.com/CVE-2023-41471/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-41471
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-41471
- OSV: https://osv.dev/vulnerability/CVE-2023-41471

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-41471/
Summaries are generated and may contain mistakes; the official description above is the record.