Insecure Jinja2 templates rendered in Haystack Components can lead to RCE
Impact
Haystack clients that let their users create and run Pipelines from scratch are vulnerable to remote code executions.
Certain Components in Haystack use Jinja2 templates, if anyone can create and render that template on the client machine they run any code.
Patches
The problem has been fixed with PRs deepset-ai/haystack#8095 and deepset-ai/haystack#8096.
Both have been released with Haystack 2.3.1.
Workarounds
Prevent users from running the affected Components, or only let users use preselected templates.
References
The list of impacted Components can be found in the release notes for 2.3.1.
https://github.com/deepset-ai/haystack/releases/tag/v2.3.1
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | haystack-ai | < 2.3.1 | 2.3.1 |
References
- https://github.com/deepset-ai/haystack/security/advisories/GHSA-hx9v-6r9f-w677
- https://nvd.nist.gov/vuln/detail/CVE-2024-41950
- https://github.com/deepset-ai/haystack/pull/8095
- https://github.com/deepset-ai/haystack/pull/8096
- https://github.com/deepset-ai/haystack/commit/3fed1366c448b02189851bf08166c1f6477a02b0
- https://github.com/deepset-ai/haystack/commit/6c25a5c73e83aa32c3241ba84a5cbb3ac0e8a89e
- https://github.com/deepset-ai/haystack
- https://github.com/deepset-ai/haystack/releases/tag/v2.3.1
- https://pypi.org/project/haystack-ai
- https://github.com/advisories/GHSA-hx9v-6r9f-w677
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-1336- Platform
- Python (PyPI)
- Package
haystack-ai- Disclosed
- 31.07.2024
- Updated
- 11.10.2026 13:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-1447 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-hx9v-6r9f-w677 - CC BY 4.0
Vulnerability history: haystack-ai
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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